COM/IO Shield (Option Sc)
The COM/IO Shield has the following specification:
Feature Specification
Feature 1xRS-232/485
1xdigital input
1xdigital output
RS-232 Signals TX, RX
RS-232 Signal Level High > 5 VDC, low < -5 VDC
RS-232 Bitrate Up to 115 200 Bit/s
RS-485 Signals A,B
RS-485 Signal Level Differential output, 1.5 VDC- 3.5 VDC
RS-485 Bitrate Up to 115 200 Bit/s
RS-485 Termination 120 Ω configurable by SW
DI Level Low: 0 VDC- 3 VDC, high: 9 VDC- 32 VDC
DO Level 0-32 VDC/1A
DIO Isolation 1500 VDC
Table 4.23.: Specification of COM/IO Shield
Pin Assignment
Pin Signal
1 RS232 GND
2 RS232 RX (router input); RS485 A (Half-Duplex)
3 RS232 TX (router output); RS485 B (Half-Duplex)
4 In− (Digital Input isolated)
5 In+ (Digital Input isolated)
6 Out NO (Digital Output isolated, Relay contact normally open)
7 Out COM (Digital Output isolated, Relay common)
8 Out NC (Digital Output isolated, Relay contact normally closed)
Table 4.24.: Pin Assignments of COMIO Shield
NB1601 31 User Manual for NRSW version 4.8.0.103
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