Black Box PCW22A-R3 - Manual

Page 2 - FCC STATEMENT; FEDERAL COMMUNICATIONS COMMISSION

FCC STATEMENT 1 FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio frequency energy and if not installed and usedproperly, that is, in strict accordance with the manufacturer’s instructions, may cause in...

Page 4 - TABLE OF CONTENTS; Table of Contents

TABLE OF CONTENTS 3 Table of Contents 1.0 Specifications .......................................................................................................................................5 2.0 Introduction ............................................................................................

Page 6 - CHAPTER 1: Specifications

CHAPTER 1: Specifications 5 1.0 Specifications Protocol — Asynchronous: TTY (ASCII) Bisynchronous: 2770, 2780, 3741, and 3780 (EBCDIC) Ports — A: Asynchronous B: Synchronous/bisynchronous Speed — Up to 19.2 Kbps (each port independent) Interface — RS-232 (both ports) Connectors — (2) DB25 (female) F...

Page 8 - Leave the cover off for installation.; DATA FLOW CONTROL; ON = echo asynchronous characters — echoplex mode.; “Control D”; NOTE; OFF = include CR character in EBCDIC data; NOTE

CHAPTER 3: Installation 7 3.0 Installation 3.1 UNPACKING AND INSPECTION After unpacking the A/S-2G, inspect it for shipping damage. Should there be any noticeable damage,save the cartons and contact the carrier who delivered the box to place a freight damage claim. To open the A/S-2G, take out the f...

Page 9 - OFF = Normal operation; OFF = Convert escape sequences to CR LF or FF per

PROTOCOL CONVERTER A/S-2G 8 Block size for the 2770/2780 is normally limited to 160, but block size is 400 if the 2770/2780 has theMultiple Record Transmission. Block size for the 3780 is 512. Switch #4 ON = sends CR LF (Carriage Return, Line Feed) to asynchronous device immediately after each logic...

Page 12 - The DIP Shunt

CHAPTER 3: Installation 11 If SW3, Switch #7 is ON, the A/S-2G will drop DTR when only 32 character spaces remain in the buffer.The A/S-2G will reassert DTR as soon as there are at least 33 character spaces available. For mostapplications, it is best to configure SW3, Switch #7 ON. If SW3, Switch #7...

Page 13 - (a) continuous carrier—place the jumper over the ON position.; PREPARING THE A/S-2G FOR CONNECTION TO A SYNCHRONOUS DEVICE

PROTOCOL CONVERTER A/S-2G 12 3.3.5 CARRIER OPTIONS If the carrier detect signal is to be driven by the A/S-2G configuration (DCE), the jumper labeled CAR AENB must be installed. CAR A ENB is located below U20. Refer to the printed circuit board, Figure 5-2,on page 28. The carrier control jumper, CAR...

Page 14 - CHAPTER 3: Installation; EXTERNAL OR INTERNAL CLOCKING OPTION; must

CHAPTER 3: Installation 13 there is data to be transmitted. Once the A/S-2G receives CTS from the attached device, it will transmitthe data. When the synchronous port (Port B) is configured as DTE, the CTS B jumper must be placed over the CNT position. Place the CTS B jumper over the CNT position wh...

Page 15 - and terminated by; Command

PROTOCOL CONVERTER A/S-2G 14 3.4.8 COMMAND PASS-THRU To use the command pass-thru feature, the command must be preceded by &% and terminated by &% . Example: &% - Command - &% Commands consist of character pairs. Each pair must represent a valid Hexidecimal value (i.e. zerothrough 9 ...

Page 16 - EBCDIC

CHAPTER 4: Operation 4.0 Operation By its nature, a protocol converter must operate differently in each direction, since it is communicatingwith separate devices. Therefore, its operation will be discussed separately for asynchronous tosynchronous operation and for synchronous to asynchronous. 4.1 A...

Page 17 - representation of the CR with the EBCDIC data.

PROTOCOL CONVERTER A/S-2G 16 In 3741 protocol, each block contains only one record. If SW3, Switch #5 is OFF, the A/S-2G will fillthe block with spaces until it reaches 128 characters . If SW3, Switch #5 is ON, the block will endimmediately after CR. NOTE: • If SW3, Switch #3 is OFF, then one charac...

Page 18 - The final record transmitted from the asynchronous side; Bisynchronous Device; ENQ

CHAPTER 4: Operation 17 If SW3, Switch #7 is OFF, the A/S-2G will send an X-OFF (ASCII DC3, 13 Hex) to the asynchronous devicewhen RAM reaches a nearly-full state. This prevents data from being lost due to a buffer overrun. WhenRAM space is available, the A/S-2G will send an X-ON (ASCII DC1, 11 Hex)...

Page 19 - Block B of data

PROTOCOL CONVERTER A/S-2G 18 Data Flow — A/S-2G to Synchronous Device Bisynchronous Device A/S-2G Converter Asynchronous Device *Assumes block size of 80 is selected. IF 2270 - 2780AA AA 32 32 32 32 02 (text up to 80 characters), IF, BCC1, BCC2; etc. (lastrecord 26, BCC1, BCC2, FFFF IF 3780AA AA 32 ...

Page 20 - or

CHAPTER 4: Operation 19 Data Flow — A/S-2G to Synchronous Device Bisynchronous Device A/S-2G Converter Asynchronous Device ACK 1 NAKNegative AcknowledgmentAA AA 32 32 32 32 3D FF FF ACK 0 WAKAA AA 32 32 32 32 6B FF FF Holds up transmission whilebuffer clears DC3 (ASCII 13Hex) or drop DTR CTS or user...

Page 22 - Send EOT

CHAPTER 4: Operation 21 Data Flow — A/S-2G to Synchronous Device Bisynchronous Device A/S-2G Converter Asynchronous Device *Assumes block size of 80 is selected. IF 2270 - 2780AA AA 32 32 32 32 02 (text up to 80 characters), IF, BCC1, BCC2; etc. (lastrecord 03, BCC1, BCC2, FFFF IF 3780AA AA 32 32 32...

Page 23 - SYNCHRONOUS DEVICE TO ASYNCHRONOUS DEVICE

PROTOCOL CONVERTER A/S-2G 22 4.2 SYNCHRONOUS DEVICE TO ASYNCHRONOUS DEVICE 4.2.1 LINE CONTROL When the A/S-2G is initially connected to an AC power source or reset, the synchronous device can gaincontrol of the line by sending an ENQ. When the asynchronous side has control of the line, a turnaround ...

Page 25 - Data Flow — A/S-2G to Asynchronous Device

PROTOCOL CONVERTER A/S-2G 24 Data Flow — A/S-2G to Asynchronous Device Bisynchronous Device A/S-2G Converter Asynchronous Device ENQ Send data block A Send data block B ENQ ENQ Send data block C Unformatted mode—successive characters(including spaces) appearone after another as sent ACK 0 ACK 1 Send...

Page 26 - CHAPTER 4: Operation

CHAPTER 4: Operation 25 Data Flow — A/S-2G to Asynchronous Device Bisynchronous Device A/S-2G Converter Asynchronous Device Send data block D Send data block D Send data block E Retransmit block E TTD TTD NAK ACK 0 when available Send block D NAK ACK 1 (when correctly received) Send block E NAK NAK ...

Page 28 - CHAPTER 5: Conversions and Connections; Conversions and Connections; TRANSPARENCY MODE OF OPERATION; following for one second.; INSTALLING OR REPLACING PROMS; to do this. This will ensure that the pins stay aligned.; Caution

CHAPTER 5: Conversions and Connections 27 5.0 Conversions and Connections 5.1 TRANSPARENCY MODE OF OPERATION With a special transparency PROM installed, the A/S-2G will communicate with a host system in IBMbinary synchronous transparent mode. To special-order the transparency PROM, please call techn...

Page 32 - PRINTED CIRCUIT BOARD LAYOUT

CHAPTER 5: Conversions and Connections UNASSIGNED EBCDIC CODE 04 2B 46 58 71 8D AB B7 CE ED 08 30 47 59 72 8E AC B8 CF EF 09 31 48 62 73 8F AE B9 DA FA 17 34 49 63 74 90 AF BA DB FB 1A 38 51 64 75 9A B0 BB DC FC 20 3B 52 65 76 9C B1 BC DD FD 21 3E 53 66 77 9D B2 BE DE FE 23 42 54 67 78 9E B3 BF DF F...

Black Box PCW22A-R3 - Manual

Table of Contents:

Summary

Other Black Box Models