Black Box IC478A-M-R2 - Manual

Page 5 - Contents

4 A S Y N C 2 3 2 ↔ 4 2 2 / 4 8 5 C O N V E R T E R Contents 1. Specifications ...............................................................................................52. Introduction ................................................................................................73. Configura...

Page 6 - CHAPTER 1: Specifications

5 Data Rate Up to 115,200 bps Connectors IC476A-F-R2: (1) Female DB25, (1) Terminal block; IC476A-M-R2: (1) Male DB25, (1) Terminal block; IC477A-F-R2: (2) Female DB25s; IC477A-M-R2: (1) Female DB25, (1) Male DB25; IC478A-F-R2: (1) Male DB25, (1) Female DB25; IC478A-M-R2: (2) Male DB25s Transmission...

Page 7 - Draws operating power from RS-232; Size

6 A S Y N C 2 3 2 ↔ 4 2 2 / 4 8 5 C O N V E R T E R Humidity 5 to 95%, noncondensing Altitude Up to 10,000 feet (3048 m) Power Draws operating power from RS-232 data and control signals; no AC power or batteries required Size 2.7"H x 2.1"W x 0.7"D (6.9 x 5.3 x 1.8 cm) Shipping Weight <...

Page 8 - CHAPTER 2: Introduction; 22/485 Converter provides exceptional versatility in a

7 CHAPTER 2: Introduction The Async 232 ↔ 422/485 Converter provides exceptional versatility in a compact package. Requiring no AC power or batteries for operation, the Converter supports asynchronous data rates up to 115.2 Kbps over one or two unconditioned unshielded, solid-copper-core twisted pai...

Page 10 - CHAPTER 3: Configuration

9 3.1 Setting the DTE/DCE Switch For your convenience, the IC476A-X-R2 Converter has an externally accessible DTE/DCE switch (see the diagram on the previous page). To access the DTE/DCE switch on the IC477A-X-R2 and IC478A-X-R2, remove the plastic shells as illustrated on the next page.If the devic...

Page 11 - -wire operation. These switches are located; on the underside of

10 A S Y N C 2 3 2 ↔ 4 2 2 / 4 8 5 C O N V E R T E R 3.2 DIP-Switch Configuration The eight positions on switch set S1 (shown in the first illustration below) configure the Converter for RTS/CTS delay (used in 2-wire, half-duplex mode only), echo mode (used in 2-wire, half-duplex mode only), method ...

Page 12 - Switch S1 Summary Table

11 CHAPTER 3: Configuration 3.2.1 DIP-S WITCH S ETTINGS The factory-default settings for the switches are presented below. Read the information following the table for an explanation of the switch’s function. Switch S1 Summary Table Position Function Factory Default S1-1* “Transmit Off” Impedance Of...

Page 13 - NOTE

12 A S Y N C 2 3 2 ↔ 4 2 2 / 4 8 5 C O N V E R T E R S1-4: Echo Mode The setting for switch S1-4 determines whether the Converter echoes data back to the transmitting device (half-duplex mode only). S1-4 Setting On Echo On Off Echo Off S1-5: Carrier-Control Method The setting for switch S1-5 determi...

Page 14 - If you have any questions about the proper settings for your; Typical Switch Applications; interface using the internal terminal blocks, go to

13 CHAPTER 3: Configuration 3.2.2 C ONFIGURATION S WITCH A PPLICATIONS The table below shows you how to set the Converter’s switch to fit several common applications. Do not change switch settings until you have carefully read this manual. If you have any questions about the proper settings for your...

Page 15 - Converter; NOTES

14 A S Y N C 2 3 2 ↔ 4 2 2 / 4 8 5 C O N V E R T E R Once you have properly set the configuration switches, you are ready to connect the Converter to your system. This chapter tells you how to properly connect the Converter to the RS-485 and RS-232 interfaces. 4.1 Connection to the RS-485 Interface ...

Page 16 - CHAPTER 4: Installation; wires won’t pull loose.

15 CHAPTER 4: Installation 2 ) I t i s n o t n e c e s s a r y t h a t t h e R S - 4 8 5 d e v i c e a d h e r e t o t h e R S - 5 3 0standard. However, you must make sure that the signals, polarities, andpairing of your connection conform to this table. 3) If you are not using two IC477A-X-R2s or I...

Page 17 - Connect; “G” on the terminal block. To avoid ground loops, we recommend; should resemble the diagram at the top of the next page.

16 A S Y N C 2 3 2 ↔ 4 2 2 / 4 8 5 C O N V E R T E R 5. Connect the other pair of wires to RCV+ and RCV- on the terminal block, again making careful note of which color is positive, and which color is negative. NOTE Positive and negative are relative terms and may not always have thesame relationshi...

Page 19 - Converter Signal

18 A S Y N C 2 3 2 ↔ 4 2 2 / 4 8 5 C O N V E R T E R 10. Bend the top half of the case as necessary to place it over the strain- relief assembly. Do not snap the case together yet. 11. Insert one captive screw through a saddle washer, then insert the captive screw with the washer on it through the h...

Page 20 - DB25 port of the RS-232 device. After doing so, remember to insert and; Wiring for Multipoint Applications

19 CHAPTER 4: Installation 4.2 Connection to the RS-232 Interface Once you have properly configured the Converter and connected the twisted-pair wires correctly, simply plug the Converter directly into the DB25 port of the RS-232 device. After doing so, remember to insert and tighten the two captive...

Page 21 - data; RS-422/485 RCV connection will cause DCD output at the RS-232

20 A S Y N C 2 3 2 ↔ 4 2 2 / 4 8 5 C O N V E R T E R 4.4 Operation Once the Converter is properly installed, it should operate transparently— as if it were a standard cable connection. Operating power is derived from the RS-232 data and control signals; there is no ON/OFF switch. All data signals fr...

Page 22 - A P P E N D I X A: RS-232C Pin Configurations; Pin Configurations

21 A P P E N D I X A: RS-232C Pin Configurations STANDARD “DTE” SETTING DIRECTION DIRECTION From Converter Data Term. Ready (DTR) - 20 1- (FG) Frame Ground 2- (TD) Transmit Data 3- RD) Receive Data 4- (RTS) Request to Send 5- (CTS) Clear to Send 6- (DSR) Data Set Ready 7- (SG) Signal Ground 8- (DCD)...

Page 23 - Pin Configuration

22 A S Y N C 2 3 2 ↔ 4 2 2 / 4 8 5 C O N V E R T E R The pinout below applies to models IC477A-F-R2, IC477A-M-R2, IC478A-F-R2, IC478A-M-R2. Pin Number Pin Name 2 TXA (positive) 3 RXA (positive) 14 TXB (negative) 16 RXB (negative) 4 RTS A (positive)* 5 CTS A (positive) 6 DCE Ready A (positive) 8 Rcv....

Black Box IC478A-M-R2 - Manual

Table of Contents:

Summary

Other Black Box Models