MODBUS/TCP Fieldbus manual - Koco Motion GmbH
MODBUS/TCP Fieldbus manual - Koco Motion GmbH
MODBUS/TCP Fieldbus manual - Koco Motion GmbH
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Revision R020111<br />
<strong>MODBUS</strong>/<strong>TCP</strong> <strong>Fieldbus</strong> <strong>manual</strong> 4 Function codes<br />
Trip on relative position The ASCII of the command mnemonic is sent in revers order in the request PDU i.e.<br />
RT. The parameter string is written or read in normal sequence.<br />
Note the the only trip function available is trip on relative position. to re-enable the trip,<br />
use register 0x007D.<br />
4.3.2 Read manufacturer specifi c – 65 (0x41)<br />
MCode mnemonic TR (Trip on relative position)<br />
Mnemonic<br />
Hi word<br />
Lo word<br />
0x20 0x20<br />
0x52 0x54<br />
Parameter data length Up to 11 bytes<br />
ASCII = 6 5 0 0 0<br />
Hex 3D 36 35 30 30 30<br />
Request Length Value<br />
Function code 1 byte 0x41<br />
Mnemonic Hi word 2 bytes 0x2020 0x2020/2033*<br />
Mnemonic Lo word 2 bytes See section 4.3.1 for listing<br />
*For capture/trip I/O point.<br />
Response Length Value<br />
Function code 1 byte 0x41<br />
Byte count 2 bytes N* (quantity of characters returned)<br />
Response n bytes n=N or N+1<br />
Error Length Value<br />
Error code 1 byte 0xC1<br />
Exception 1 byte 01, 02, 03 or 04<br />
Example Example shows reading the setting of the trip on relative input (TR). The<br />
value reads as 0x35 31 32 30 30 30 or decimal 512000 steps.<br />
Request Response<br />
Function 0x41 Function 0x41<br />
Mnemonic Hi word<br />
Mnemonic Lo word<br />
0x00<br />
0x35<br />
0x00 0x31<br />
0x52<br />
0x54<br />
Response<br />
0x32<br />
0x30<br />
0x30<br />
0x30<br />
4-11
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