5
Modbus TCP with FHPP
96
Festo – EMCA-EC-C-HP-EN – 2017-11e – English
5.3.6
Read process data, Function code 0x03 (Read holding registers)
The table describes the structure of the “Read process data, Function code 0x03” command.
Significance
Read holding registers request (0x03)
Field
Bytes
Values
Byte no.
Function code
1
0x03
8
Start address
2
0x0000
9, 10
Quantity of registers
2
0x0004
0x0008
0x000C
0x0010
11, 12
Read holding registers response (0x03)
Field
Bytes
Values
Byte no.
Function code
1
0x03
8
Byte count
1
0x08
0x10
0x18
0x20
9
Register value
8
FHPP Standard (status data)
10 ... 17
8
FPC/FHPP+
18 ... 25
8
FHPP+
26 ... 33
8
FHPP+
34 ... 41
Read holding registers exception (0x83)
Field
Bytes
Values
Byte no.
Error code
1
0x83
8
Exception code
1
0x01: illegal function
0x02: illegal data address
0x03: illegal data value
0x04: server device failure
9
Tab. 5.7
Read process data, Function code 0x03
Содержание EMCA-EC-67 CO Series
Страница 33: ...2 CANopen Festo EMCA EC C HP EN 2017 11e English 33 ...
Страница 73: ...3 EtherCAT with FHPP Festo EMCA EC C HP EN 2017 11e English 73 ...
Страница 87: ...4 EtherNet IP with FHPP Festo EMCA EC C HP EN 2017 11e English 87 ...
Страница 113: ...6 PROFINET IO with FHPP Festo EMCA EC C HP EN 2017 11e English 113 ...
Страница 116: ...7 FHPP 116 Festo EMCA EC C HP EN 2017 11e English ...
Страница 140: ...8 FHPP standard data I O data 140 Festo EMCA EC C HP EN 2017 11e English ...
Страница 148: ...9 Measuring reference system 148 Festo EMCA EC C HP EN 2017 11e English ...
Страница 210: ...10 Control via FHPP 210 Festo EMCA EC C HP EN 2017 11e English ...
Страница 223: ...11 Monitoring of the drive behaviour Festo EMCA EC C HP EN 2017 11e English 223 ...
Страница 367: ...D CANopen communication Festo EMCA EC C HP EN 2017 11e English 367 ...
Страница 402: ...F Diagnostics and fault clearance 402 Festo EMCA EC C HP EN 2017 11e English ...
Страница 413: ...EMCA EC 67 CO DIO EC EP PN Festo EMCA EC C HP EN 2017 11e English 413 ...
Страница 414: ...EMCA EC 67 CO DIO EC EP PN 414 Festo EMCA EC C HP EN 2017 11e English ...
Страница 415: ......