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FAILSAFE CONFIGURATIONS
42 1TGC908004
Figure 34 Parameter Window for MODBUS TCP parameters in MNavigate
Multiple Master in Modbus TCP applications
The Digital Gateway offers the possibility to support up to 4 MODBUS TCP masters. This
function can only be utilized if also the PCS or PLC MODBUS master supports such configura-
tion.
7.6. Failsafe
In circumstances where a disturbance in the MODBUS communication network needs to be
monitored it is possible to select a ‘Failsafe’ state for each M10x. This state must be de-
fined as a parameter for each M10x
separately. The Digital Gateway supervises the MODBUS
communication to the PCS or PLC if the parameter PLC Time Out is set to “YES”. The timeout
for this connection is set by using the parameter PLC Time Out (see Table 13 and 14 for initial
values).
The M10x must be operating in ‘Remote’ mode for the Failsafe function to be
active.