Powerful Solutions for Digital Plants

6

DeltaV – PLC/SLC Electrical Interface

The electrical interface between DeltaV and the PLC-3, PLC-5 and SLC 5/XX conforms to the RS-232 protocol and RS-422/485 protocol. The cabling should not exceed 50 feet for the RS-232 protocol or 4000 feet for the RS-422/485 protocol.

In 6.1 and 6.2 the pin assignments for the PSIC Serial Terminal Block are listed for the RS-232 protocol and the RS-422/485 protocol. Pins 1 - 8 are for Port 1 connections and Pins 9 - 16 are for Port 2 connections

6.1RS-232 Pin Assignments for DeltaV PSIC

Terminal Number

Signal Description

1

Port 1 - Isolated Ground (GND)

2

Unused

3

Port 1 - Transmit Data (TXD)

4

Unused

5

Port 1 - Receive Data (RXD)

6

Unused

7

Port 1 - Data Terminal Ready (DTR)

8

Port 1 - Dataset Ready (DSR)

9

Port 2 - Isolated Ground (GND)

10

Unused

11

Port 2

- Transmit Data (TXD)

12

Unused

13

Port 2

- Receive Data (RXD)

14

Unused

15

Port 2

- Data Terminal Ready (DTR)

16

Port 2

- Dataset Ready (DSR)

 

 

 

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Delta SLC-500, PLC-5, 1770-KF2 user manual DeltaV PLC/SLC Electrical Interface