GM9907-L5
bulk scale controller user’s manual
- 25 -
03
Illegal data
value
The portion of data written and the allowed range.
04
Slave failure
An unrecoverable error occurs when the controller is
attempting to perform the requested operation.
07
Unsuccessful
programming
request
For the controller, the received command cannot be executed
under the current conditions.
4.4.6.2 MODBUS transmission mode
The
MODBUS
transmission mode is the
RTU
mode.
When communication with the
RTU
mode, information of each
8-bit
byte is divided
into
two 4-bit
transmission character
hexadecimal.
Data format:
8
-bit data bit,
1
stop bit, even parity (
8-E-1
)
8
-bit data bit,
1
stop bit, no parity (
8-N-1
)
Baud rate:
9600/19200/38400/57600/115200
(optional)
Code:
RTU
4.4.6.3 MODBUS address allocation
Protocol
address
PLC address
description
Description
State signal bit para
，
below contents are Read only
0000
40001
Weight state
bit
Description
.0
0:
Unstable weight ;
1:
stable;
.1
0:
Non-zero ;
1:
zero ;
.2
Currently
showing
the
weight of the /-
0:
Positive sign ;
1:
minus
sign
.3
Weight overflow
.4
Negative weight overflow
.5
Millivolts overflow
.6
Millivolts
Negative
overflow
.7
Millivolts stable:
1
unstable:
0
.8~.15
Reserved
