ABB M101, Руководство пользователя, Страница: 45 / 74

CO NFIGUR AT IO NS FAILSAFE
1TG C908004M0 201 37
Configuration of the parameters is done via MNavigate. The parameters must then be
downloaded to the MNS Digital Gateway.
Figure 31 Parameter Window for MODBUS TCP parameters in MNavigate
7.5.1. Multiple Master in Modbus TCP applications
The MNS 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-M. This state has to be
defined as a parameter for each M10x-M separately. The MNS Digital Gateway supervises the
MODBUS communication to the PCS or PLC if the parameter PLCTimeOut is set to “YES”. The
timeout for this connection is set by using the parameter PLCTimeOut (see Table 9 and 10 for
initial values).
The M10x must be operating in ‘Remote’ mode for the Failsafe function to be
active.