High−level Instructions
3 − 373
Example) When 64 bits (4 words) are read from the bit address H7788 of the unit No. 17 connected to the
COM1 and written in the bit 0 of DT100 of the local unit.
[ F146(RECV), H1111,H7788, K64, DT100 ]
[S1]: H1 H1 H1
Unit No. (H01 to HFF)Selects COM port
H1
[S1]:H1111
[S2]:H7788
[N] :K64
[D] :DT100
Command
conversion
MODBUS commands
Slave address
Command (01H)
Starting No. of read (H)
Starting No. of read (L)
Quantity to read (H)
Quantity to read (L)
CRC16 (H)
CRC16 (L)
11
01
77
88
00
40
A4
F4
1
2
3
4
5
6
7
8
Command 02 (Input status read)
Example) When 1 bit is read from the bit address H7788 of the unit No. 17 connected to the COM1 and written
in the bit of DT100 of the local unit.
[ F146(RECV), H1211,H7788, K1, DT100 ]
[S1]: H1 H1 H1
Unit No. (H01 to HFF)Selects COM port
H1
Command
conversion
[S1]:H1211
[S2]:H7788
[N] :K1
[D] :DT100
MODBUS commands
Slave address
Command (02H)
Starting No. of read (H)
Starting No. of read (L)
Quantity to read (H)
Quantity to read (L)
CRC16 (H)
CRC16 (L)
11
02
77
88
00
01
20
C4
1
2
3
4
5
6
7
8
Example) When 64 bits (4 words) are read from the bit address H7788 of the unit No. 17 connected to the
COM1 and written in the bit 0 of DT100 of the local unit.
[ F146(RECV), H1211,H7788, K64, DT100 ]
[S1]: H1 H1 H1
Unit No. (H01 to HFF)Selects COM port
H1
Command
conversion
[S1]:H1211
[S2]:H7788
[N] :K64
[D] :DT100
MODBUS commands
Slave address
Command (02H)
Starting No. of read (H)
Starting No. of read (L)
Quantity to read (H)
Quantity to read (L)
CRC16 (H)
CRC16 (L)
11
02
77
88
00
40
E0
F4
1
2
3
4
5
6
7
8
FPΣ/FP−X/FP0R
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