BLH NOBEL G4-DT, Technical Manual

Page: 151 / 194

G4 Multi Channel Weighing Instrument
6-45
Example 3: Set read window to read from Scale 4 floating point data
(registers 44074 to 44085). Note that the number of registers read is always 12.
1. Make sure that the previous command was not 250.
Set command byte (00) to 0 if previous command was 250.
2. Set start address (44074) in bytes 02 and 03.
See chapter ‘Communication – Modbus protocol – General registers’.
3. Enter the command (250) in byte 00.
Byte Description Dec Hex
00 Command 250 FA
01 Number of registers to write
 
02 – 03 Start address 44074 AC 2A
04 – 15 Write registers 1 – 6.
 
Example 4: Reset the ‘Program reset’ bit in ‘Instrument status’.
1. Make sure that the previous command was not 252.
2. Enter the command (252) in byte 00.
Byte Description Dec Hex
00 Command 252 FC
01 Number of registers to write
 
02 – 03 Start address
 
04 – 15 Write registers 1 – 6.
 
Example 5: Other commands like Taring, Zeroing etc.
See chapter ‘Communication – Modbus protocol – Command register’ for
a list of available commands.
1. Make sure that the previous command was not the desired command.
2. Enter the desired command in byte 00.
Byte Description Dec Hex
00 Command XXX XX
01 Number of registers to write
 
02 – 03 Start address
 
04 – 15 Write registers 1 – 6.
 
Note that a dash in Dec. or Hex columns above indicates that the value is unimportant
and not used for the function described.