A&D Weighing HW-200KV-WP - Manual (Page 63)

HV-WP/HW-WP Series Page 61
17.3. OP-04, Options
An example of connection
The polarities (A,B) of the
host computer signal
depends on the computer
model.
17.3.2. Communication Format
Commands consist of an address and the same command as for the RS-232C.
The address of the equipment is inserted in the first part of the command.
Commands return the same command when the communication format is f15 3 1
and there is no data transmitted.
If the address is 23, the reply is as follows:
Normal response
Impossible command response
Undefined command response
Bit format
Host computer
HV-WP/HW-WP
Address=01
SDA
SDB
RDA
RDB
Terminator
(May be built in the
host computer)
SDA
SDB
RDA
RDB
TRM
SDA
SDB
RDA
RDB
TRM
SDA
SDB
RDA
RDB
TRM
SDA
SDB
RDA
RDB
TRM
SDA
SDB
RDA
RDB
TRM
SDA
SDB
RDA
RDB
TRM
HV-WP/HW-WP
Address=02
HV-WP/HW-WP
Address=10
HV-WP/HW-WP
Address=01
HV-WP/HW-WP
Address=02
HV-WP/HW-WP
Address=10
Host computer
Terminator
(May be built in the
host computer)
RS-422 RS-485
Connect the
terminator to
the ones fart-
hest from the
host computer.
A
B