GWY-800-B Features
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Doc No: UMAN\GWY-800-B\0706
REVISION 0
4.1.2
Master-Slave Configuration
In this mode, one of the Gateway ports is a master and other is the slave so the devices connected on these ports
are slave and master respectively. Blocks do not control data transfer in this mode. Data transfer takes place only
when Master Device, connected on slave port of Gateway, sends a request to read / write data. This mode requires
mapping registers for data transfer. Mapping means defining one or multiple registers in the Slave Device correspond-
ing to one or multiple registers in the Master Device. Mapping can be done using the Block definition area, so in this
mode, any Block is used for mapping registers of the two devices.
NOTES:
1)
As Gateway Setup Software is common for both the Gateway Modes (as a master or slave), titles
in the Block Definition Area, may not be appropriate when using Gateway in Master - Slave mode
(e.g. Source ID, Source PLC, Destination PLC ).
2)
In Master - slave mode, If anybody mapped read only registers at destination end to any registers
at source end, it’s users responsibility that these registers are not going to be written by master.
