How to configure Black Box IC108A for 2-wire ISC communication
Procedure Steps
1) To wire the Black Box IC108A for 2-wire communication:- Connect TxA and RxA with a jumper.
- Connect TxB and RxB with a jumper.
- Connect TxA on the IC108A to port 1 TR1- of the controller.
- Connect TxB on the IC108A to port 1 TR1+ of the controller.
2) Use the following Black Box settings:
- S2 - Off, not terminated
- S3 - Off, not Biased
- W5 - AB, RTS/CTS
- W8 - BC, 2-wire communication
- W9 - C, 0 milliseconds
- W15 - BC, DATA enabled
- W16 - B, Turn Around Delay = 0.1 millisecond
- W17 - D, Driver Enable Hold = 0.7 millisecond
- W19 - No jumper - used for test purposes only
- XW1A - Jumper block must be installed
3) Use the following settings for the controller:
- Set Port 1 jumpers to enable RS-485 2-wire communication.
- Set Port 1 jumpers for Termination off.
- Set Flow Control to off (DIP Switch 5 must be off - this was used during testing by Lenel Technical Support to establish communication with the device).
- Set Baud Rate to 38,400 (DIP Switches 6 and 7 ON).
4) Configure the serial port as follows:
- 38,400 bits per second
- Databits = 8
- Parity = None
- Stop bits = 1
- Flow Control = Hardware
5) For the advanced port settings, the FIFO settings should be default settings (High).
Note that the settings for S2, S3, and the port 1 jumper setting for termination may vary depending on the configuration at the installation site.
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