| The limit of 2 S7 connections is a
limitation in the Siemens CPU module. With the newer S7-300 CPUs
(eg. 315-2DP with P/N 6ES7 315-2AG10-0AB0 V2 firmware), the CPU
allow a maximum of 16 S7 connections. However, 2 S7 connections are
reserved for the Siemens OP and PG, 2 are reserved for external
applications and with the remaining 12 connections reserved for
"Siemens S7 connections". Thus to get more S7 connections for
Citect to use, you will need to reduce the reserved "Siemens S7
connections".
To do this, go to the Hardware Configuration, Select the CPU
module and choose "Properties". Go to the "Communication" tab. The
"S7 Standard Communication" setting should have a default value of
12. Reduce this number to increase the external S7 connections
required for Citect to use. For example, reducing the "S7 Standard
Communication" from 12 to 8 will allow 6 external S7 connections
for Citect to use.
|
