Edwards PGC201, Инструкция по эксплуатации

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D0300040001EN - Installation
Page 19
RS232 / RS485 Interface (Interface RS232 / RS485)
The connection Interface RS232 / RS485 ( Figures 5 and 7 ) permits operation of the
instrument via a computer or a terminal.
Figure 7 Interface connection socket (SUB-D, 9-way)
Connecting:

Connect the serial interface of the computer using a shielded cable to the connection
RS232/RS485 on the rear of the PGC201.
Relay output (relay output)
Through the connection Relay Output ( Figures 5 and 8 ) you can utilise the floating relay
contacts for switching purposes and ready signals.
Figure 8 Connection plug for relay output (SUB-D, 25-way)
CAUTION:
When using the RS232 serial interface use a serial extension cable with a 9-way plug and
a 9-way socket. The wires in the cable must not be crossed. Utilisation of the RS485
requires a special cable.
WARNING:
Voltages exceeding 60 V d.c. or 30 V a.c. are dangerous when touched. You may only
switch output voltages of up to 60 V d.c. or 30 V a.c. with a maximum current of 1 Amp at
the connector marked Relay Output. The voltage must comply with the requirements of a
safety extra-low voltage (SELV-E in accordance with EN 61010).
1 B (RS485) 6 Link with 4
2 TxD (RS232) 7 Link with 8
3 RxD (RS232) 8 Link with 7
4 Link with 6 9 A (RS485)
5 Ground