Switch sw1 – Rockwell Automation 1203 Serial Communications Module Series A User Manual
Page 19
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Chapter 3
Installation
3-3
Switch SW1
Switch SW1 is used to select:
S Serial communications mode (RS232/RS422/RS485)
S Communications Module address
SW1
O
F
F
O
N
8
7
6
5
4
3
2
1
Communications
Module Address
Communications
Mode Selection
AB0398B
Table 3.A
Switch SW1 Settings for Communications Mode
Switch
Value
(Decimal)
SW1-2
SW1-1
Communications Mode
0
Off
Off
RS232 (DF1 Protocol)
1
Off
On
RS422 (DF1 Protocol)
2
On
Off
RS485 (DF1 Protocol)
3
On
On
Not Used
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