17
Before staring Installation Operation Specifications
Serial number Details Size Ex.
0 Frame head character None ...
1 Device number 8 bit 01 h
2 Function code (08) 8 bit 08 h
3 Diagnosis code (high) 8 bit 00 h
4
Diagnosis code (low) 8 bit
01 h
5
Transmission data (high) 8 bit 12 h
6 Transmission data (high) 8 bit 34 h
7 Frame confirmation CRC (low) 8 bit XX h
8 Frame confirmation CRC (high) 8 bit XX h
9 Frame terminating character None ...
<Reception frame>
Serial number Details Size Ex.
0 Frame head character None ...
1 Device number 8 bit 01 h
2 Function code (16) 8 bit 10 h
3 Record start register (high) 8 bit 75 h
4 Record start register (low) 8 bit 36 h
5 Number of data to record (high) 8 bit 00 h
6 Number of data to record (high) 8 bit 05 h
7 Number of data to transmit (WORD) 8 bit 05 h
8 Data to record 1 (high) 8 bit dd h
9 Data to record 1 (low) 8 bit dd h
... ... ... ...
n - 4 Data to record n (high) 8 bit dd h
n – 3 Data to record n (low) 8 bit dd h
n – 2 Frame confirmation CRC (low) 8 bit XX h
n – 1 Frame confirmation CRC (high) 8 bit XX h
n Frame terminating character None ...
Serial number Details Size Ex.
0 Frame head character None ...
1 Device number 8 bit 01 h
2 Function code (16) 8 bit 10 h
3 Record start register (high) 8 bit 75 h
4 Record start register (low) 8 bit 36 h
5 Number of data recorded (high) 8 bit 00 h
6 Number of data recorded (high) 8 bit 05 h
7 Frame confirmation CRC (low) 8 bit XX h
8 Frame confirmation CRC (high) 8 bit XX h
9 Frame terminating character None ...
● Function code 16 (WRITE MULTIPLE REGISTER)
<Transmission frame>
With function code 16, consecutive register details can be written. Number of data to be written at a time
is depending on line condition and transmission speed within the frame. One transmission frame should be
less than 255 bytes.
<Reception frame>
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