100
Sec
tion
5
How to Use Command
L
in
k
Un
it
V7
00-
L1
2
V500-R521B2/C2
User’s Manual
Section 5
Example of System Configuration
Upper connection port specification
A port to connect with the upper equipment using RS-232C. A dust cover is attached
before shipping. Remove it when used.
Pin arrangement
Connector cap is not conducting with GR (frame ground).
Item
Specification
Connector specification
D-sub 9 pin Connector plug Lock screw: #4-40UNC
Cable length
Max. 15 m
Communication system
In compliance with RS-232C
Synchronous system
Asynchronous system
Communication control system
One-to-N procedure dedicated to OMRON
Communication speed
4800/9600/19200/38400 bps (Set with DIP-SW)
Character format (fixed)
Start bit
Data bit
Parity bit
Stop bit
Total
1
8
None
1
10
Check code
(Error detection system)
FCS (Frame Check Sequence)/Vertical parity system
Pin No. Signal name
Function
Signal direction
1
-
Not connected
-
2
RD
Received data
Input
3
SD
Transmission data
Output
4
-
Not connected
-
5
SG
Ground for signal
-
6
-
Not connected
-
7
RS
Transmission request (Normally
ON when operating)
Output
8
CS
Transmission allowed
Input
9
-
Not connected
-
RS signal control from the upper equipment
In case of 1: N connection with RS-232C interface of the upper equipment, the RS signal of the
upper equipment should be input to the CS signal of the link unit. Turn OFF the RS signal within
15ms after data transmission is finished. This control should be performed for normal operation.
9
8
7
6
5
4
3
2
1
Turn ON only in case when data is transmitted from upper equipment.
Within 15 ms
Upper side SD
Upper side RS
V500-R521.book 100 ページ ２００８年７月１８日 金曜日 午後１時１分
