SEW-Eurodrive INTERBUS UFI11A Manual page 43

Parameter chan- A PCP WRITE service must be performed before a parameter can be read via the pa-
nel performs a rameter channel. The PCP WRITE service defines where the UFI11A data should be
read type service
available. A read service must take place on the acyclical parameter channel in order
for these data to get to the master. As a result, a PCP WRITE and a PCP READ are
always required for performing read services via the parameter channel. The following
table shows how read services are performed via the acyclical MOVILINK parameter
channel.
Control (master)
1. Initiate the service coded in the parameter channel by means of a WRITE to the "MOVILINK parameter
2. READ "MOVILINK parameter channel cyclical" and evaluation of the service confirmation in the para-
1. Reception is confirmed immediately, the parameter channel is evaluated and the re-
2. Service confirmation is entered in the parameter channel and can be evaluated by
The acyclical MOVILINK parameter channel is only handled locally on the fieldbus inter-
face and is defined as in the following table.
Index:
Object code:
Data type index :
Length:
Local address:
Password:
Access groups:
Access rights:
Name[16]:
Extension length:
Manual – Fieldbus Interface INTERBUS UFI11A
channel cyclical" object.
meter channel.
quested service performed.
READ access in the master.
INTERBUS Interface
WRITE 8299 (parameter channel)
OK
READ 8299 (parameter channel)
Data = Parameter channel with result
8299
7 (simple variable)
10 (octet string)
8
Read all/Write all
-
-
UFI11A fieldbus interface
5
43