Baumer GK473 - Manual (Page 13)

Manual_GK473_Profibus_EN.doc 13/16 Baumer IVO GmbH & Co. KG
04.05.11 Villingen-Schwenningen, Germany
5.5.4. Automatic SPA scanning ON or OFF
The command (@-Z) is for switching on and off the automatic scanning of all SPAs connected.
The preset parameters are overwritten (but not altered permanently).
Data = 0 (30h) = scan OFF
Data = 1 (31h) = scan ON
Several commands to the SPA are only valid until another command is being received (for example
display SPA address in the bottom line of the display). Any automatic scan would turn these
commands void. Furthermore, any long-distance scan is occupying the RS485 bus line so that scan
OFF enables the gateway to handle any Profibus commands much more rapidly.
Example : Scan OFF.
Zhl Adr Cmd Scmd data
transmit
zz 20h 40h 5Ah 30h 00h 00h 00h 00h 00h 00h 00h 00h 00h 00h 00h
Zhl Adr Cmd Scmd data
response
zz 20h 40h 5Ah 30h 00h 00h 00h 00h 00h 00h 00h 00h 00h 00h 00h
5.5.5. Readout gateway version or serial number
The command @-X is for reading out the firmware version or serial number of the gateway.
To make a difference, a sub-command „V“ or „S“ is added.
The version number is transmitted in four digits. The digital digit of the main release will be depicted as
a blank, if zero.
Example: V 1.23 = 20h 31h 32h 33h
Example: V 12.34 = 31h 32h 33h 34h
At present the serial number is not yet supported, it is always 00000000.
The total length of command and response is always 16 due to the consistent Profibus transmission
length.
The „address“ parameter (Adr) is only serving for keeping the standard command structure, the value
is always 20h.
Example 1: Read out version number (V 1.00)
Zhl Adr Cmd Scmd „V“ data
transmit
zz 20h 40h 58h 56h 00h 00h 00h 00h 00h 00h 00h 00h 00h 00h 00h
Zhl Adr Cmd Scmd „V“ data
response
zz 20h 40h 58h 56h 20h 31h 30h 30h 00h 00h 00h 00h 00h 00h 00h
Example 2: Read out serial number
Zhl Adr Cmd Scmd „S“ data
Senden
zz 20h 40h 58h 53h 00h 00h 00h 00h 00h 00h 00h 00h 00h 00h 00h
Zhl Adr Cmd Scmd „S“ data
response
zz 20h 40h 58h 53h 30h 30h 30h 30h 30h 30h 30h 30h 00h 00h 00h
5.6. Error signals (data exchange)
Messages relating to SPA communication are handled within the standard data exchange procedure.
There is a difference between SPA messages and gateway messages.
• A SPA indicates an error after a transparently passed command. Regarding the respective
message please refer to the corresponding SPA interface description. Both messages „format
error“ and CRC error“ are possible.