Omron V640-HAM11-V3 User Manual page 68

SECTION 3
Preparing for Communications
Test Mode
DIP-SW
Test Mode
Enabled ON
Disabled OFF
Refer to page 21.
RS-485 Terminator
DIP-SW
Option
10
Invalid OFF
Valid ON
Communications Conditions
Item
Standard conformed to
Communications control protocol
Synchronization method
Baud rate
Frame composition
Error detection
CIDRW System
66
User's Manual
9
Set the Test Mode and then restart the Amplifier Unit to make the setting effective.
Set ON at both of the end Units in a multidrop system, and OFF at all the other Units. If there is only one
Unit, set ON.
If there is a possibility that one of multiple Amplifier Units in use may be used independently, turn the termi-
nators of all the Amplifier Units OFF and fit external terminators close to the Units at both ends.
RS-232C
1:N protocol exclusive to OMRON
Start-stop synchronization
Set using a DIP switch
Start bit
1:N protocol 1
1:1 protocol 1
1:N protocol FCS (frame check sequence)
1:1 protocol Vertical parity
Description
Description
Specifications
Data bits Parity bit
8 None
8 Even
Stop bit Total
1 10
1 11