KROHNE Summit 8800 Vol 3 - Manual (Page 130)

130 www.krohne.com 08/2013 - MA SUMMIT 8800 Vol3 R02 en
SUMMIT 8800 COMMUNICATION 08
Figure 175 Modbus master GC component settings
Split type Select what the heavy component Cx+ represents, C2+ to C9+
Split code The register in the GC modbus list for Cx+
Components Assign the percentage of Cx+ to the specific component. Total should be 100%
8 .3 .7 Redundancy master
For redundancy, Modbus is used to connect two Summits in redundancy mode. Each Summit
has two modbus ports: a master and a slave which are cross connected. See volume 2.
The Modbus master is defined as the “redundancy master”:
Figure 176 Modbus redundancy master
With as parameters:
Inter-packet delay In a noisy environment characters may be lost causing two packets frames
to be mixed. This is prevented by putting a delay at the end of each packet. Not needed for TCP/
IP.