schmersal SD-I-DP-V0-2 Instructions De Montage Et De Câblage page 8

Montage- und Anschlussanleitung / PROFIBUS-Gateway für serielle Diagnose
Mounting and wiring instructions / PROFIBUS gateway for serial diagnostics
Instructions de montage et de câblage / Passerelle PROFIBUS pour diagnostic série
Reading acyclic data from the SD slave
english
In a permanently defined cycle, acyclic data of the individual SD slave can be requested through the 2 request bytes (PZD request byte 00 and byte 01)
and the data byte (PZD response byte 01).
The instruction byte defines, which data will be requested from a slave. The SD device, from which the data are requested, is defined in the
SD interface by means of the SD address byte. The response data of the SD slaves are saved in the PZD response byte 01.
The data request cycle is defined as follows:
1.) The control deletes the data byte before or after each command. A feedback signal is generated
through the response byte, indicating whether the data have been deleted or not
Hex FF Data deleted, acyclic data service ready
2.) The control first writes the SD address into the PZD request byte 01.
Then, the control writes the instruction byte into the PZD request byte 00
3.) The response data are made available in the PZD response byte 01 of the control.
The data byte can also include an error message as response:
Hex FE Instruction error, undefined instruction requested
Hex FD
Address error, invalid slave address for the selected instruction
or slave address of a unavailable SD slave selected
Table: overview of the instructions and response data
Instructions,
acyclic data request
Delete data byte
Read number of projected SD slaves
Read device category of the SD slave
Read hardware revision of the SD slave
Read software version of the SD slave
(high byte)
Read software version of the SD slave
(low byte)
Device category SD slave:
Hex: 30 CSS 34, safety sensor
Hex: 31 AZM 200, solenoid interlock
Hex: 32 MZM 100, solenoid interlock
Hex: 33 AZ 200, safety switch
Hex: 34 CSS 30 S, CSS 300, safety sensor
Hex: 35 MZM 100 B, safety switch B variant
Hex: 36 AZM 300 B, safety switch B variant
Hex: 37 RSS 36, safety sensor
Hex: 38 AZM 300 Z, solenoid interlock
Hex: 39 RSS 16, safety sensor
Hex: 3A RSS 260, safety sensor
Hex: 3C AZ 300, safety switch
Hex: 3D MZM 120 B, safety switch
Hex: 3E MZM 120 BM, safety switch
Instruction byte SD address
PZD byte 00 PZD byte 01
(request) (request)
Hex: 00 Hex: xx
Hex: 01 Hex: 00
Hex: 02 Hex: 01 up to Hex: 1F
Hex: 03 Hex: 01 up to Hex: 1F
Hex: 04 Hex: 01 up to Hex: 1F
Hex: 05 Hex: 01 up to Hex: 1F
SD-I-DP-V0-2
Data byte Data description
PZD byte 01
(response)
Hex: FF Data deleted, ready for new instruction
Hex: 01 up to Hex: 1F Number of projected SD slaves 1 – 31
Hex: 30 up to Hex: F8 SD slave device category (see below)
Hex: 41 up to Hex: 5A Hardware revision A –Z as ASCII characters
Hex: 00 up to Hex: 63 Software version, high byte: 0-99
Hex: 00 up to Hex: 63 Software version, low byte: 0-99
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