Omron V500-R521B2 User Manual page 100

Section 5
Example of System Configuration
Multi-connection port specification
When plural bar code readers are connected to one RS-232C port of the upper
equipment, connect to a multi-connection port of other link unit.
When the upper equipment has the RS-485 port, connect this port to act as upper
connection port. However, when the multi-connection port is used as the upper
connection port, the upper connection port (RS-232C) of the link unit cannot be used.
GR (frame ground) terminal is also on this port.
Connector specification
Cable length
Communication system
Synchronous system
Communication control system
Communication speed
Character format (fixed)
Error detection system
Pin arrangement
5
4
3
2
1
Pin No. Signal name
5
4
3
2
1
When connecting with RS-485 interface of the upper equipment
The upper equipment should be in data reception condition within 15 ms after data transmission.
This control should be performed for normal operation.
GR (frame ground) terminal is in the multi-connection port.
D type grounding (former type 3 grounding) should be performed.
V500-R521B2/C2
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User's Manual
Item
5 pin special connector (accessory for the link unit)
Total length: Max. 1 km
In compliance with RS-485
Asynchronous system
One-to-N procedure dedicated to OMRON
4800/9600/19200/38400 bps (Set with DIP-SW)
Start bit
FCS (Frame Check Sequence)
- Short circuit with terminal 2 inside the circuit
+ Short circuit with terminal 1 inside the circuit
GR Frame ground
- Short circuit with terminal 5 inside the circuit
+ Short circuit with terminal 4 inside the circuit
Specification
Data bit Parity bit
1 8
Function
Stop bit
None 1
0
Total
10