Q-Drive Installation Manual
Issue 1.5
Page 18
Copyright © 1996 Quin Systems Ltd.
4.2.3
P4 RS422 Out / RS232
The socket P4 is used as the daisy chain OUT connector in an RS422 multi-drop drive
chain or the RS232 port in a single drive application. The RS232 option can only be
used if the drive has been setup for this format by Quin systems. The default
configuration is for RS422, the connections are shown below.
4.2.4
P3 RS422 In
The plug P3 is used as the RS422 daisy chain IN connector in a multi-drop drive chain.
If the unit has been configured for RS232 then this connector has no function.As a
temporary measure, an RS232 device may connect to an RS422 drive (default linking)
with the connections shown.
Pin Number.
RS422 Function.
RS232 Function.
1.
Not Used.
Not Used.
2.
Tx.
Tx.
3.
Rx.
Rx.
4.
Not Used.
Not Used.
5.
Gnd.
Gnd.
6.
Not Used.
Not Used.
7.
/Tx.
RTS.
8.
/Rx.
DTR.
9.
Not Used.
Not Used.
Table 6: P4 RS422 Out / RS232 Connections
P4 (OUT
Connector)
Pin Number.
RS422
Function.
RS232 (temporary
usage).
P3 (IN connector)
Pin Number.
1.
Not Used.
.
1.
2.
Tx.
.
2.
3.
Rx.
Gnd.
3.
4.
Not Used.
.
4.
5.
Gnd.
Gnd.
5.
6.
Not Used.
.
6.
7.
/Tx.
Tx.
7.
8.
/Rx.
Rx.
8.
9.
Not Used.
.
9.
Table 7: P3 to P4 RS422 Daisy Chain Connections
