SIXNET stations support the following Modbus commands as described in the AEG Modicon document, Modicon Modbus Protocol Reference Guide PI-MBUS-300 Rev. E. RemoteTRAK and EtherTRAK modules support only the command(s) that apply to their I/O type(s).
Modbus commands that a SIXNET station may reply to:
01 - Read multiple discrete outputs
02 - Read multiple discrete inputs
03 - Read multiple analog outputs
04 - Read multiple analog inputs
05 - Write a single discrete output
06 - Write a single analog output
15 - Write multiple discrete outputs
16 - Write multiple analog outputs.
Modbus commands that a SIXNET station may send in Modbus I/O Transfer messages:
01 - Read multiple discrete outputs
02 - Read multiple discrete inputs
03 - Read multiple analog outputs
04 - Read multiple analog inputs
06 - Write a single analog output
15 - Write multiple discrete outputs
16 - Write multiple analog outputs.
See Also: Reading and Writing Floating Point and Longer Integer Values