Atlas Copco PowerMACS 4000, User Manual

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Peripheral Devices
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8.13.4.3 Telemechanique UNI-TE
Five types of commands are used:

Read object (command 0x36) reading data from PowerMACS.

Write object (command 0x37) for writing data to PowerMACS

Identification (command 0x0F) for identification of PowerMACS

Protocol Version (command 0x30) for protocol version used in PowerMACS

Mirror (command 0xFA) for performance measurement between the master and PowerMACS
For Read and Write object the supported segments and types are:

Segment 0x68, Type 0x07 (internal word number)

Segment 0x68, Type 0x08 (internal double word number)
Checksum is calculated as the modulo-256 sum of all bytes from and including DLE-STX up until and
including the last character before the checksum.
If PowerMACS is configured with slave number = 1..255 it will respond only if Slave no from XD is the
correct one. If slave number = 0 PowerMACS will respond to any Slave no from XD.
See next page for an example of using the Read object and Write object command