Start-Up Procedure
17200138_002_C0 – (2016-10) –
Leybold
33
You can specify which of the several input/output assemblies predefined in a de-
vice should be used for
every single connection.
Reading or setting of the input/output assemblies is possible only if the
corresponding connection (polling, change of state, bit strobe) has been
allocated in the Allocation Message.
If you want to read the number of the chosen assembly, you must read the attrib-
utes 14 and 16 in the corresponding Instance of the Connection Object (Object
ID 5).
For reading this value, the connection has to be established. The EPR attribute
may be set.
Instance 2: Polling
Instance 3: Bit Strobe
Instance 4: Change of State/Cyclic
If you want to set the number of the chosen assembly, you have to set the attrib-
utes 14 and 16 in the corresponding instance of the connection object.
To set this value, the connection has to be allocated, but the EPR attri-
bute has not to be set to any value.
Read a Configured Assembly
(addresses as specified above)
Get single request:
ID Message body
414 00 0E 05 02 0E get produced connection path
(request for input assembly by master)
Get single response:
ID Message body
413 00 8E 20 04 24 05 30 03 Response from slave
The addressing format of the attribute values differs from the normal mode. A con-
nection path attribute that specifies class 4, Instance 5, and attribute ID 3 is illus-
trated below:
Class #4
Instance #5
Attribute #3
20 04 24 05 30 03
The instance defines the assembly you want to use. This format has to be used by
the master in the request and is used by the slave in the response.
Set the Input Assembly 04 for a Poll Connection
(addresses as specified above)
Set single request:
ID Message body
414 80 00 10 05 02 10 20 04 first fragment
414 80 81 24 04 30 03 second fragment
Because the message body is longer than 8 bytes, the fragmented protocol has to
be used.
Choice of the Input and Output
Assemblies
Reading the Configured
Assemblies
Setting of Assemblies
Examples
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