Scanner instruction manual, Serial communications connections table, F4 digital input connections – Precision Digital PD6080 User Manual
Page 21
PD6080/PD6081 Super Snooper Modbus
Scanner Instruction Manual
21
Serial Communications Connections Table
The table below shows the terminal connections for 3-wire RS-485 devices.
PD6080/6081
Master
PD6080/6081
Snooper
PC
Connection
Modbus
Slave Meter
Modbus
Level Gauge
PDA1485
RS-485 Adapter
PDA1485
RS-485 Adapter
PDA8485
RS-485 to USB
RS-485 RS-485
G GND
DO
DI
DO
DI
DO
DI
D- A
(-)
DO
DI
DO
DI
DO
DI
D+ B
(+)
F4 Digital Input Connections
A digital input, F4, is standard on the scanner. This digital input connected with a normally open closure
across F4 and COM, or with an active low signal applied to F4.
P-
F4
P+
COM
V+
3
4
1
2
5
mA+ COM
V+
mA+
7
8
6
9
Ack
Figure 9. F4 Digital Input Connections