Specifications

Application in combination with H1 CP143 H1 / TCP/IP manual
5-44 Rev. 00/07
5.10.1.1 Initialization of H1 transport parameters
The H1 system parameters represent the operational parameters of level 4 that are required for
master-slave communications. Only under special circumstances should these values be modified.
You can access the following dialog window via H1 Transport-Parameter under Init:
Fig. 5-21: H1 Transport parameters
The parameters for H1 initialization
Min. Credit
The CP basically executes a 0 credit procedure and it therefore reacts like a Siemens CP143.
This value is fixed at 0. It can not be modified.
Persistence Count
Range: 0 to 65535 (Default: 1)
Abort Timeout
Persistence count x Abort Time = max. time during which the TP4 protocol stack establishes
a connection on its own or in which it waits for a connection
Range: 0 to 65535, in units of 10 ms (Default: 6000).
Protocol Option
This value is fixed at 2. It can not be modified.
Protocol Class
This value is fixed at 4 It can not be modified.
TPDU Size
Range:0to13(Default:10)