Siemens D7-SYS, Руководство пользователя

Страница: 201 / 534

Communications configuring
3-112
System- and communication configuring D7-SYS - SIMADYN D
Edition 12.2003
Communications
reference : Type: Cyclic client
Association type : MSZY Local LSAP : Poll-SAP
Remote address : Remote LSAP :
Max. PDU length : 241 Monitoring interval : 10 s
Multiplier : 1
Password : 0 Group : 0
Profile : 0 0
Supported utility :
Read : no Write : no
Name :
Table 3-50 Mask, "Cyclic client"
Rules:
•
The communications reference must correspond with the CFC
configuring (address stage 1 at the address connections).
•
The local LSAP is always the "Poll SAP" = SAP 58.
•
The remote address and remote LSAP uniquely address the remote
server.
•
Max. PDU length should only be changed if the server cannot handle
the specified length.
•
The monitoring interval can be freely selected, however it must be
greater than "0".
•
The "Cyclic client" associations can be assigned priorities on an SS5
using the multiplier. Value range: 1 (low priority) ... 4 (high priority).
The number specifies the ratio as to how often the utility, executed via
this association, can be executed within a "poll cycle".
A poll cycle is the time which a PROFIBUS master requires to address
all of the slaves corresponding in its poll list. This time is generally a
multiple of the token circulating time.
•
The read and write utilities should be selected (as requester ".req") as
they are required.
•
Read should be selected if a receive block uses this association as
client.
•
Write should be selected if a transmit block is to use this association
as client.