Phoenix Contact 27 41 40 6, Руководство пользователя

Страница: 57 / 80

onlinecomponents.com
Parameter Data Channel (PCP)
6170
B
51
13 Parameter Data Channel (PCP)
13.1 Services Supported
The AS-i/INTERBUS gateway operates exclusively as an INTERBUS server, i. e.
it provides services to the INTERBUS master.
INTERBUS communications services of the AS-i/INTERBUS gateway:
This means that the AS-i/INTERBUS gateway provides READ and WRITE ser-
vices in addition to the services provided on INTERBUS.
Data traffic with the AS-i slaves is preferably handled over the process data chan-
nel, as this route is faster (maximum cycle time 15 ms) and all the slaves are
addressed and queried in parallel.
13.2 Communication Relationship List (CRL)
The communication relationship list on the AS-i/INTERBUS gateway contains just
one entry. The AS-i/INTERBUS gateway has only one communication relationship
to INTERBUS address 0. In other words: once the INTERBUS master has sent a
request to the AS-i/INTERBUS gateway, it must wait until it has received the con-
firmation. Only then may it send the next request. The AS-i/INTERBUS gateway
does not support symbolic names, only a virtual field device and no priorities.
Structure of the CRL header in the gateway:
Service Function group Client/Server Confirmed/unconfirmed
Initiate Administration Server Confirmed
Abort Administration Client/Server Unconfirmed
Reject Administration Client/Server Unconfirmed
Status Administration Server Confirmed
Identify Administration Server Confirmed
Get-OD (long) Administration Server Confirmed
Write Application Server Confirmed
Read Application Server Confirmed
Attribute Value in the AS-i/INTERBUS gateway CRL
CR 0
Number of CRL entries 1
Symbol length
0
VFD pointer supported false