Protocol „Universal Modbus Ascii Master/Slave; Delta Exchange Protocol; Protocol Ssi - DEUTSCHMANN AUTOMATION UNIGATE CL-CANopen Instruction Manual

Deutschmann Automation GmbH & Co. KG Implemented protocols with Universal Script - protocols application
11.7 Protocol „Universal Modbus ASCII Master/Slave"
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The fieldbus data exchange for Modbus ASCII is identical with RTU. The UNIGATE automati-
cally transmits the data in ASCII format on the serial side.
Protocol description: see chapter 11.5 "Protocol „Universal Modbus RTU Slave"" respectively
see chapter 11.6 "Protocol „Universal Modbus RTU Master"".

11.8 Delta exchange protocol

The Delta exchange protocol can only be used since version 1.9.0 of the universal script
Deutschmann.
With this protocol, data can be specifically copied to an area on the fieldbus output side, i.e. from
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the UNIGATE to the PLC.
To do this, two control parameters, the address offset and the number of bytes, are required at
the start of the transfer before the actual user data then follows. First comes the address offset
(Word), then the number of bytes (Word), then the user data as a byte array.
The two parameters (address offset and number of bytes) must be sent with every data transfer.
1st byte address offset high
2nd byte address offset low
3rd byte number of bytes high
4th byte number of bates low
5th byte user data 1st byte
6th byte "2nd byte
7. "...
Example:
1st byte 0x00
2nd byte 0x02
3rd byte 0x00
4th byte 0x05
5th byte 0x01
6th byte 0x02
7th byte 0x03
8th byte 0x04
9th byte 0x05
In the fieldbus output data (e.g. PROFIBUS), the data is sent to the PLC as follows
sent: 0x00 0x00 0x01 0x02 0x03 0x04 0x05 0x00 ...

11.9 Protocol SSI

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With the SSI protocol, e.g. SSI encoders are evaluated with the UNIGATE and this information
is forwarded to the higher-level controller. Parameters can be used to configure the encoder
type, the encoder resolution, the clock frequency and an ERROR bit (if supported) according to
the SSI encoder used. See also chapter 6 (SSI-interface).
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23.2.22 UNIGATE fieldbus gateway UNIGATE CL - CANopen V. 3.7 45