Interface And Data - Emerson PACSystems RSTi User Manual

User Manual
GFK-2745C
4.5 ST-121F
4.5.1

Interface and Data

The following illustration shows the interface design for ST-121F.
Figure 38: Discrete Input Module ST-121F
The following table lists the pin numbers and description for ST-121F.
Table 35: ST-121F Pin Description
Pin Number
1
3
5
7
9
11
13
15
17
19
Discrete Inputs
Description
Input Channel 0
Input Channel 2
Input Channel 4
Input Channel 6
Input Channel 8
Input Channel 10
Input Channel 12
Input Channel 14
Field Ground (0V)
Field Power (+24Vdc)
Pin Number Description
2 Input Channel 1
4 Input Channel 3
6 Input Channel 5
8 Input Channel 7
10 Input Channel 9
12 Input Channel 11
14 Input Channel 13
16 Input Channel 15
18 Field Ground (0V)
20 Field Power (+24Vdc)
Chapter 4
Nov 2019
47