Rockwell Automation 1203 Serial Communications Module Series A - Manual (Page 18)

Chapter 3
Installation
3-2
Factory Switch Settings
Switch Setting Communication Mode
SW1-8 Off Module Address = 1
SW1-7 Off
SW1-6 Off
SW1-5 Off
SW1-4 Off
SW1-3 On
SW1-2 Off RS232 (DF1 Protocol)
SW1-1 Off
SW2-8 Off BCC Checksum
SW2-7 Off Point-to-Point
SW2-6 Off 1 Stop Bit
SW2-5 Off Parity Disabled
SW2-4 Off Even Parity (if enabled)
SW2-3 On 9600 Baud
SW2-2 On
SW2-1 Off
SW3-8 Off No Application Timeout (Disabled)
SW3-7 Off
SW3-6 On Duplicate Message Detection Enabled
SW3-5 Off Disable Datalink D
SW3-4 Off Disable Datalink C
SW3-3 Off Disable Datalink B
SW3-2 Off Disable Datalink A
SW3-1 Off Disable Logic Command/Status and
Reference/Feedback