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SUNSTONE CDDP-A USERS GUIDE
Appendix C: Modbus Data Tables
Reference these tables when sending/receiving messages to/from the CDDP-A via an ethernet connection us-
ing Modbus software.
SUPPORTED FUNCTION CODES
Funtion
Code (dec)
Funtion
Code (hex)
Name Read/Write
1 0x01 Read Coils
2 0x02 Read Discrete Inputes
3 0x03 Read Holding Registers
4 0x04 Read Input Registers
5 0x05 Write Single Coil
6 0x06 Write Single Register
15 0x0F Write Multiple Coils
16 0x10 Write Multiple Registers
20 0x14 Read File Record
22 0x16 Mask Write Register
23 0x17 Read/Write Mulitple Registers
65 0x41 Modbus E-Stop Set Write
66 0x42 Modbus E-Stop Clear Write
67 0x43 Weld Write
68 0x44 Schedule Weld Data Read/Write
69 0x45 Schedule Extra Weld Data Read/Write
70 0x46 Comparator Read/Write
71 0x47 Alarm Settings Read/Write
72 0x48 Basic PLC Settings Read/Write
100 0x64 Comparator Failure and Weld Count Read
101 0x65 RSS Mode Read/Write
102 0x66 System Info Read
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