Omron V550-A20, Operation Manual

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V550-A20 Operation Manual
Section 3-
17
Connecting Your V550-A20 To An External Device
2 3 1
4
PLC Master/Slave System
SYSMAC Series C200H Alpha…RS-485 Multidrop:
Connection with Multiple Readers:
Up to 32 slaves can be connected for each serial port on the master
(depending upon line length and required response time).
• Operation:
The master device, C200H…, sends poll messages to the slave BCRs
requesting them to respond with data. The BCRs respond to the
polls. There is no response if they are not polled by the master.
• Message Formats:
V550-A20 Communication Setting
1 CPU C200H…
2 Bar code reader V550-A20
3 Power supply unit S82S-0305 (5V, 0.6A)
(see note)
4 Communications Board C200HW-COM06-E
NOTE: Each bar code reader requires a minimum of
500 mA to operate. If your system contains more
than 1 bar code reader in parallel, select a
power supply rated for a higher output current.
Basic Setting READ Trigger Level Trigger
Read Mode Single
Communication Baud Rate 9600 bps
Condition (Default) Word Length 7 bits
Parity EVEN
Stop Bits 2 bits
Header STX
Footer CR
RS/CS Control OFF