Instruction manual

Instruction Manual
760006-A
September 2001
4-2 System SIO Module Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA 2000 Platform
SIGNAL NAME
PIN RS-232 RS-485
1 Ground Ground
2 RxD Input RxD- Input
3 TxD Output RxD+ input
4 not used TxD+ Output
5 Ground TxD- Output
6 Relay Contact 1 NO
7 Relay Contact 2 NO
8 Relay Contact 3 NO
9 Relay Contacts common
Table 4-1. Local I/O 9-Pin Sub-D Connector Pin Identification
PIN SIGNAL NAME
1 Voltage output 1
2 Current output 1
3 Voltage output 2
4 Current output 2
5 Ground for Voltage output 1 & 2
6 Ground for Current output 1 & 2
7 Voltage output 3
8 Current output 3
9 Voltage output 4
10 Current output 4
11 Ground for Voltage output 3 & 4
12 Ground for Current output 3 & 4
13 Shield
14 Voltage output 5
15 Current output 5
16 Voltage output 6
7 Current output 6
18 Ground for Voltage output 5 & 6
19 Ground for Current output 5 & 6
20 Voltage output 7
21 Current output 7
22 Voltage output 8
23 Current output 8
24 Ground for Voltage output 7 & 8
25 Ground for Current output 7 & 8
Table 4-2. Local I/O 25-Pin Sub-D Connector Pin Identification
NOTE
Voltage outputs 0-10 VDC or 2-10 VDC, maximum 11 VDC, load > 2KΩ. Current outputs 0-20
mA or 4-20 mA, maximum 22 mA, impedance 500Ω.