FX1S-30MR-ES/UL MITSUBISHI, FX1S-30MR-ES/UL Datasheet - Page 134

• Manufacturer Part Number: FX1S-30MR-ES/UL
• Description: PLC, 16 IN, 14 RELAY OUT, 110V/2
• Manufacturer: MITSUBISHI

Specifications of FX1S-30MR-ES/UL

• No. Of Analogue Inputs: 16
• No. Of Analogue Outputs: 14
• Ip/nema Rating: IP10
• Approval Bodies: CE, CUL, UL
• External Depth: 49mm
• External Length / Height: 90mm
• External Width: 60mm
• Mounting Type: Panel

5.1.6
FX Series Programmable Controlers
WDT (FNC 07)
there is an error at some point. The PLC will then cease operation to prevent any further errors
from occurring. By causing the watchdog timer to refresh (driving the WDT instruction) the
usable scan (program operation) time is effectively increased.
Points to note:
a) When the WDT instruction is used it will operate on every program scan so long as its input
b) The watchdog timer has a default setting of 200
WDT
FNC 07
(Watch dog
timer refresh)
Mnemonic
condition has been made.
To force the WDT instruction to operate for only ONE scan requires the user to program
some form of interlock.
msec. This time limit may be customized to a
users own requirement by editing the contents of
data register D8000, the watchdog timer register.
Used to refresh
the watch dog
timer during a
program scan
Function
N/A
Can be driven at any time within the main
program body
Operation:
The WDT instruction refreshes the PLC’s watchdog
timer. The watchdog timer checks that the program
scan (operation) time does not exceed an arbitrary time
limit. It is assumed that if this time limit is exceeded
Operands
D
Applied Instructions 5
WDT, WDTP:
1 step
Program steps
5-12