19
Preparing for communication
①
Set the following setting items so that the RS-232C of the weighing instrument and AD-8551R are the same.
Reference: AD-4212C
/
AD-4212D factory setting
Setting item
Weighing device
AD-8551R
Baud rate
2400*, 4800, 9600, 19200 bps
Data bit
7 bit*
Parity
EVEN*
Stop bit
1 bit*
Terminator
<CR><LF>*
Data output format
A&D standard format*
―
Data output mode
Settings for continuous
output of weighing values.
(
stream mode*
)
―
*
AD-8551R factory setting (normally, the factory setting of AD-4212C / AD-4212D is the same.)
②
Set the following setting items so that the RS-485 of the host (PLC, PC, etc.) and AD-8551R are the same.
Setting item
Host
(
PLC, PC.etc
)
AD-8551R
Baud rate
9600*, 19200, 38400, 115200 bps
Data bit
8 bit*
Parity
EVEN*, ODD, NONE
Stop bit
1 bit*
Terminator
No communication for 3.5 charavters*
③
Refer to ”4-2 Connecting example”, “5-2 Connections”, “6-2 Connecting cable” for connecting.
・
Normally, when using the AD-4212C/AD-4212D, power can be supplied from the RS-232C terminal, so connecting
to the power terminal is not required.
・
When connecting to the AD-4212D in Modbus RTU mode, connect to the AD-8551R using the AD-4212D display connector.
④
Turn on the device power.
・
Turn on the AD-8551R and the weighing device at the same time (within approximately 1 second) or turn on the
AD-8551R first. If the AD-8551R power is turned on late, the response characteristics (Holding Register: 40
2015-2016) may not operate correctly.