Technical Information
RS 232/RS 485 Communication Description
5
HS452, HS652 Rotary Vane Pumps User Manual / 87-900-978-01 (H) 83/102
RS 232/RS 485 Communication Description
Both the RS 232 and the RS 485 interfaces are available on the
connector J2
J2 – Serial Port
Tab. 6
PIN N. SIGNAL NAME
1 + 5 V out
2 TX (RS232)
3 RX (RS232)
4 Spare
5 GND
6 A+ (RS485)
7 Spare
8 B- (RS485)
9 Spare
The communication protocol is the same (see the structure below),
but only the RS 485 manages the address field. Therefore to enable
the RS 485 is necessary to select the type of communication as well
as the device address by means of the T-plus software.
NOTE
The RS-485 is a 2-wires (gnd optional) half-duplex communication link.
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