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Technical Manual | 808AH V1.2
10
WIRING | Anyload Weigh & Measure Inc. @ www.anyload.com
3.3
S
ERIAL
C
OMMUNICATION
W
IRING
The 808AH remote displays provide industry standard serial communication ports with installation
via screw terminals. The ports are automatically detected and adjusted upon start up. There are
three communication ports available as RS-232, RS-422, RS-485, and 20mA current loop in both
active and passive mode. The serial communication wires coming from indicator shall be entered to
the unit via bottom strain reliefs and be terminated to the proper terminals.
Communication
Indicator
808AH
Description
Protocol
RS-232
RS-232
Function
RS-232 Communication
RS-232 Printer Port
-
GND
Signal Ground
-
TX2
Printer Port Transmit Data
GND
GND
Signal Ground
TX
RXD
Transmit to Receive Data
-
TXD
Transmit Data
Communication
Indicator
808AH
Description
Protocol
RS-485
RS-422
Function
RS-422 Communication
RS-485 Communication
GND
GND
Signal Ground
TXB
RXB
Negative Transmit to Negative Receive Data
TXA
RXA
Positive Transmit to Positive Receive Data
-
TXB
Negative Transmit Data
-
TXA
Positive Transmit Data
Communication
Indicator
808AH
Description
Protocol
20mA
CL-20
Function
20mA Current Loop
Passive or Active
TX-
RX-
Negative Transmit to Negative Receive Data
TX+
RX+
Positive Transmit to Positive Receive Data
Symbol
Description
NOTICE!
Availability of the printer port is subject to confirmation by manufacturer and may vary by firmware version
Refer to the F4 section for instructions on how to configure communication ports of remote display
Refer to the F4 section for instructions on how to configure passive or active mode of 20mA port
Refer to the installation section for instructions on how to access the wiring terminals