Technical Information
MS120 Single Stage Rotary Vane Pumps User Manual / 87-900-150-01(B) 182/198
Input/Output Communications
J1 – I/O: Remote I/O signals + Serial
communication
The connector J1 (D-SUB 9 pins Female connector type) hosts both
Remote I/O signals and RS232/485 communication ports.
The RS232 communication port has standard pin out. It can be used
with a standard of the shelf RS232 cable.
Figure 22
Pin assignment
PIN N. SIGNAL NAME IN / OUT
1 Interlock. Status (N.O. relay contact) out
2 TX (RS232)
3 RX (RS232)
4 Interlock. Status (N.O. relay contact) out
5 Ground
6 A+ (RS485)
7 START/STOP in
8 B- (RS485)
9 +24V (50 mA max) out