Page 3 - Note To Our Valued Customer
Note To Our Valued Customer To help us better serve you, please contact us with any comments you have about this manual or product in general. We encourage you to comment and would appreciate your assistance in improving Liebert products. Liebert Monitoring Group Applications Engineering (U.S.) [ema...
Page 4 - Table of Contents; Data Type
Table of Contents Section 1: INTRODUCTION ............................................................... 6 Specifications ..................................................................................... 7 Section 2: INSTALLATION ................................................................ ...
Page 5 - Error Handling
Read/Write Holding Registers (0x03, 0x06, 0x10) .............. 32 Read Input Registers (0x04) .................................................... 32 Read, Set Coil Status (0x01, 0x05, 0x0F) ............................. 33 Read Input Status (0x02) ......................................................
Page 6 - Ethernet; Figure 1. Typical Installation
Ethernet Internet Web Browser OpenComms NIC Network Management System Building Management System Modbus EIA-485 Figure 1. Typical Installation
Page 7 - Installation; Section 1: INTRODUCTION; Modbus RTU over EIA-485
6 Installation Section 1: INTRODUCTION The Liebert OpenComms Network Interface Card provides multiple connectivity options for your Liebert equipment. The OpenComms Network card transforms Liebert units to intelligent managed nodes on your network, enabling in-band communications with network manage...
Page 8 - SPECIFICATIONS; Electrical Requirements:; maximum; Environmental Conditions:; Advanced Microprocessor / Graphics
Installation 7 SPECIFICATIONS Electrical Requirements: Voltage: 18VAC to 24VAC 50/60 Hz, Single Phase 12VDC to 36VDC Power: 6VA maximum Environmental Conditions: Operating Ambient Temperature: 5°C to 40°C 41°F to 104°F Storage Ambient Temperature: -20°C to 60°C -4°F to 140°F Relative Humidity: 10% t...
Page 9 - Section 2: INSTALLATION
8 Installation Section 2: INSTALLATION The OpenComms NIC card may be ordered as a factory installed option, or in a kit for field retrofit to existing Liebert units or as a self-contained unit in its own enclosure. If ordered as a factory-installed option, proceed directly to subsection on User Conn...
Page 10 - Figure 2. Deluxe System/3 Control Cavity
Installation 9 Figure 2. Deluxe System/3 Control Cavity Figure 3. Deluxe System/3 Chilled Water Control Cavity
Page 11 - Figure 4. ICS Control Cavity
Page 12 - Figure 5. Challenger Installation Location
Installation 11 Figure 5. Challenger Installation Location The OpenComms Network card mounts to the L- plate for Challenger units.
Page 13 - Board illustrations are shown only for; Power Connection (Level 0 and Level 10 Microprocessors); Level 0; : Remove the power connector normally plugged into
12 Installation System Wiring (SM, AM, AG Microprocessors) Two wiring harnesses are included with the retrofit kit, one for the power connection and the second for communications. They are of sufficient length for use with the Deluxe System/3 and ICS units and the microprocessors listed above. For t...
Page 14 - Do NOT tap power from the auxiliary
Installation 13 Caution: Do NOT tap power from the auxiliary 24VAC terminals T5/G5 on the SM/AM/AG environmental controllers. Damage to controller and interface card may occur. Communication Connection (SM, AM, AG Microprocessor) The second wiring harness provided (p/n 159083G1) has a connector fitt...
Page 15 - Power Connection for External Enclosures
14 Installation MiniMate2 and Units Where Internal Mounting is Not Feasible An enclosure is recommended for use with ceiling-mounted environmental units or where internal mounting of the Network Interface Card is not feasible. Older-generation Deluxe and Challenger units may require external mountin...
Page 16 - NPower Installation; OpenComms – Network Interface Card; should be mounted in; Power Connection for NPower
Installation 15 NPower Installation As a minimum there will be an IFM board (communications interface) mounted at the mid-point on the door. Other options may also have been previously installed. The Option boards mount on the inside of the option door. Options can be located in any available option...
Page 17 - Figure 7. Npower UPS Installation
Page 18 - USER CONNECTIONS FOR OPENCOMMS NIC; under the
Installation 17 USER CONNECTIONS FOR OPENCOMMS NIC Since the OpenComms NIC can use simultaneous connections, Up to 3 user connections are may be required: a permanent network connection, a Modbus 485 connection and a temporary serial connection for configuration/setup. Confer with the network admini...
Page 19 - Section 3: SYSTEM CONFIGURATION; DIP SWITCH SETTINGS; Continued next page...
18 System Configuration Section 3: SYSTEM CONFIGURATION DIP SWITCH SETTINGS A four-position DIP switch is provided, but no user configuration via DIP switches is necessary at this time. SERVICE TERMINAL Refer to User Connections in Section 2 for instructions to physically connect to the serial port....
Page 20 - System Configuration; Service Terminal Navigat ion
System Configuration 19 Service Terminal Navigat ion Main Menu 1. Syst e m Informat ion 1.1 Name 1.2 Cont act 1.3 Locat ion 1.4 De script ion 2. Ne t w ork Int erface 2.1 Spe ed / Duple x [fixe d] 2.2 Boot Mode 2.2.1 St at ic 2.2.2 Boot P 2.2.3 DHCP 2.3 IP A ddress 2.4 Ne t Mask 2.5 De fault Gat e w...
Page 21 - System Information Menu; Consult your network administrator to
20 System Configuration 1. System Information Menu The System Information Menu seeks descriptive input to enable the unit to be identified. This data is readable via SNMP queries. The (“) character is not permitted in any of the descriptive fields 2. Network Interface Menu The Network Interface Menu...
Page 22 - SNMP Communications Menu; SNMP v1 communities are transmitted in
System Configuration 21 is received. When this condition is encountered, pushing the "enter" key returns the unit to the service terminal mode. 3. SNMP Communications Menu The SNMP (Simple Network Management Protocol) Communications Menu specifies parameters particular to the SNMP interface....
Page 23 - Firmware Update Menu; all changes
22 System Configuration 5. Firmware Update Menu The Firmware Update Menu is intended for Liebert service personnel only. No user configurable parameters are accessed in this selection. If entered, to escape, power must be cycled on the card. 6. Factory Settings Menu The Factory Settings Menu display...
Page 24 - NIC Setup and Testing; Section 4: OPERATION; SNMP
NIC Setup and Testing 23 Section 4: OPERATION SNMP The OpenComms Network Interface Card supports “get,” “getnext,” “set,” “response” and “trap” packets of SNMP (Simple Network Management Protocol). The OpenComms NIC supports MIB-II, RFC1628 and Liebert Global Products MIBs. The terms, “alarms” and “...
Page 25 - sent on the following alarms:; not; sent out when the Test In Progress alarm is removed from; MIB
24 NIC Setup and Testing provides the condition ID, the condition description, and the condition time. RFC 1628 UPS MIB UPS units log alarms in the RFC 1628 UPS MIB. Traps for the UPS units are generated out of the RFC 1628 UPS MIB. There are four traps that may be sent for the UPS units: Trap On Ba...
Page 26 - HTTP; Microsoft Internet Explorer, versions 5.x and later
NIC Setup and Testing 25 The MIBs for the OpenComms Network Interface Card are available for download on the Liebert Web site, www.liebert.co m. Navigate through Products, then Site Monitoring & Software and proceed to the OpenComms support information area. The RCF 1628 MIB can be downloaded at...
Page 27 - MODBUS RTU; LED Identifier
26 NIC Setup and Testing MODBUS RTU See Section 5 for a complete explanation of the Modbus slave. SYSTEM RESET The OpenComms Network card contains an on-board real time clock and watchdog circuitry. The card is self-monitoring and self-correcting. Nevertheless, a pushbutton is provided in the event ...
Page 28 - IGM Port Transmit; Figure 8. LED Locations
NIC Setup and Testing 27 DS13 IGM Port Transmit DS14-19 Not used Figure 8. LED Locations
Page 29 - IMPLEMENTATION BASICS; Preset a single Holding Register
28 NIC Setup and Testing Section 5: MODBUS COMMUNICATIONS & CONNECTIVITY This section describes the Modbus communications protocol as supported by the OpenComms NIC card. It includes information on how to pass information to and from the OpenComms NIC card via Modbus. It is also intended to help...
Page 30 - TRANSMISSION FORMAT; The OpenComms NIC module supports; Modbus RTU; emote; The OpenComms NIC; The communication media is fixed using; PHYSICAL CONNECTION
NIC Setup and Testing 29 delay time if HTTP, SNMP and Modbus are going to be utilized simultaneously. TRANSMISSION FORMAT The OpenComms NIC module supports Modbus RTU ( R emote T erminal U nit) transmission modes. The OpenComms NIC communication rate is fixed at 9600 baud, 8 data bits, No parity, 1 ...
Page 31 - Figure 9. Typical Maximum Installation; The recommended cable characteristics are:
30 NIC Setup and Testing Maximum of 32 devices with a total cable length of 4000 feet. Modbus RTU Master EIA-485 9600,N,8,1 Figure 9. Typical Maximum Installation The recommended cable characteristics are: Normal Environments: • 18-22 gauge, twisted-pair, stranded (non- shielded) Typical type is: Be...
Page 32 - Figure 10. Exceeding Maximum Specifications; MODBUS SLAVE FUNCTIONS
NIC Setup and Testing 31 Maximum of 32 devices with a total cable length of 4000 feet. Modbus RTU Master EIA-485 9600,N,8,1 R Maximum of 32 devices with a total cable length of 4000 feet. R Maximum of 32 devices with a total cable length of 4000 feet. Figure 10. Exceeding Maximum Specifications The ...
Page 33 - Function Code Support
32 NIC Setup and Testing A datum should consist of one or multiple registers. The leftmost byte contains the MSB and the rightmost byte contains the LSB. Function Code Support The OpenComms NIC implements the following Modbus functions. However, integrators will use function code 0x03, and 0x06 most...
Page 35 - Exception Response; Exception code is one of the following:; Modbus Packet Formats; Each Modbus packet consists of the following fields:
34 NIC Setup and Testing Exception Response Server Address Function Code (0x80) Exception code 16 bit CRC 1 byte 1 byte 1 bytes 2 bytes Exception code is one of the following: 01: Unsupported Function code 02: Out-of-range data addresses 03: Out-of-range data value (write to holding registers) 04: T...
Page 36 - However, the OpenComms NIC module
NIC Setup and Testing 35 Function Code: The function code field tells the addressed slaves what function to perform. Function codes are specifically designed invoke a specific action by the slave device. The function code range is from 1 to 127. However, the OpenComms NIC module primarily uses Funct...
Page 37 - RTU Framing Examples
36 NIC Setup and Testing RTU Framing Examples READ REGISTERS (FUNCTION CODE 0X03 & 0X04) Query: for reading holding /input registers (requested by a client) Server Addres s Function Code (0x3/0x4) Index of starting register Number of registers to be read 16 bit CRC 1 byte 1 byte 2 bytes 2 bytes ...
Page 38 - Section 6: NIC Setup and Testing; JUMPER PLACEMENTS
NIC Setup and Testing 37 Section 6: NIC Setup and Testing The NIC has a specific setup that must be in place before the card will function properly. There are jumpers on the board that must be in the correct locations. The positions of these jumpers are numbered on the board itself. A small triangle...
Page 39 - SERVICE TERMINAL TROUBLESHOOTING
38 NIC Setup and Testing requests. Once the information has been verified, press <escape> to return to the main menu and select “x” to exit out of the card. Then, reboot the card. The card may be rebooted by pressing switch S1 on the card for approximately 2 seconds until the DS9 link light tu...
Page 40 - WEB TROUBLESHOOTING; If the card does not respond to Modbus requests, verify that
NIC Setup and Testing 39 Once this information is verified, reboot the card and try to access SNMP again. WEB TROUBLESHOOTING If the card does not serve up a web page, but the Service Terminal is functioning, SNMP is functioning, and the card is connected to the network (verified through ping), then...
Page 42 - HE; around the globe, Liebert is the; Network Interface Card
NIC Setup and Testing 41 While every precaution has been taken to ensure accuracy and completeness in this literature, LiebertCorporation assumes no responsibility, and disclaims all liability for damages resulting from use of thisinformation or for any errors or omissions. © 1999 Liebert Corporatio...
