Sigmadue - microPAC MP-01 - User manual
32
5-3 Communication Ports Protocols
sigmadue MP-01 has various communication ports and protocols. The
combinations of ports and protocols are shown below:
Figure 5.5 - Communication Ports and associated Protocols.
Notes: 1. Modbus Master/Slave
2 Consult the Installation Guide to polarise and terminate the RS485 ports.
5-4 Watchdog Timer
Ascon MP-01contains a watchdog control, managed by 2 specific FBs.
Watchdog is a down counter, decreased in 100ms. When the count value reaches
zero, two different behaviors may be set:
• CPU keeps ON the program execution, it stores the event and forces the
DO01 if enabled (please see
“3-2-5 Startup Setup Menu”
for details);
• CPU reset and the program restart.
Please note that the Watchdog timer is controlled by FBs and it runs independently
of the PLC program. Therefore, if the program is stopped (e.g. during a debug ses-
sion), the timer is still active, and behaves as programmed when the counter
reaches zero.
For this reason, during the debug session it is advisable to disable Watchdog
function.
X1: RS485
Modbus port
X0 Service Port:
RS232/485 Modbus
LAN Ethernet 10 base T Port
• TCP/IP Modbus
To Next Page
Loading...
