PC3000 Complete Installation guide iss 12 - Elektro-Trading
PC3000 Complete Installation guide iss 12 - Elektro-Trading
PC3000 Complete Installation guide iss 12 - Elektro-Trading
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Intelligent Communications Module<br />
18-6<br />
It is not possible to cover all possible uses of the communication links to and from an<br />
ICM but the following table shows how the links would be set for some of the typical<br />
uses. In the table link LK*1 refers to LKA1 for channel A, LKB1 for channel B and<br />
LKC1 for channel C etc.<br />
Requirement Links Comments<br />
RS232 not applicable The links are ignored<br />
Point to point for RS232 connection (Port D only)<br />
RS485 LK*1 forward position Receiver terminated<br />
Point to point LK*2 forward position Tx and Rx permanently enabled<br />
4-Wire LK*3 & 4 not fitted Tx and Rx separate<br />
LKA5-8 as required Optional swap if not<br />
(port A only) in cable (Note 1)<br />
RS485 LK*1 forward position Receiver terminated<br />
Point to point LK*2 rear position Tx disabled when not transmitting,<br />
2-wire Rx disabled when transmitting<br />
(Suitable for half LK*3 & 4 fitted Tx and Rx shorted<br />
duplex protocols only) LKA5-8 horizontal<br />
(port A only)<br />
Swap not required<br />
RS485 LK*1 as required Optional receiver termination (Note 2)<br />
Master LK*2 forward position Tx and Rx permanently enabled<br />
4-wire LK*3 & 4 not fitted Tx and Rx separate<br />
LKA5-8 vertical<br />
(port A only)<br />
Swapped (Note 1)<br />
RS485 LK*1 as required Optional receiver termination (Note 2)<br />
Master LK*2 rear position Tx disabled when not transmitting,<br />
2-wire Rx disabled when transmitting<br />
(Suitable for half LK*3 & 4 fitted Tx and Rx shorted<br />
duplex protocols LKA5-8 horizontal Swap not required<br />
only) (port A only)<br />
RS485 LK*1 as required Optional receiver termination (Note 2)<br />
Slave LK*2 not fitted Tx disable when not transmitting,<br />
4-wire Rx permanently enabled<br />
LK*3 & 4 not fitted Tx and Rx separate<br />
LKA5-8 horizontal<br />
(port A only)<br />
Not swapped<br />
RS485 LK*1 as required Optional receiver termination (Note 2)<br />
Slave LK*2 rear position Tx disabled when not transmitting,<br />
2-wire Rx disabled when transmitting<br />
(Suitable for half LK*3 & 4 fitted Tx and Rx shorted<br />
duplex protocols only) LKA5-8 horizontal<br />
(port A only)<br />
Swap not required<br />
<strong>PC3000</strong> - <strong>Installation</strong> Guide
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