IFM BasicController CR0431, Руководство по программированию, Страница: 32 / 228

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ifm Programming Manual BasicController relay CR0431 v03.03.00 05 / 2018
System description Software description
>
Watchdog behaviour
15365
In this device, a watchdog monitors the program runtime of the CODESYS application.
If the maximum watchdog time (100 ms) is exceeded:
> the device changes to the "Timeout Error" state
> all processes are stopped (reset)
> all outputs are switched off
> the status LED flashes red at 10 Hz
Eliminate the fault:

Delete application program!

PowerOn reset

Reload the application program into the device
If the watchdog in question fails:
> a second watchdog leads the device to the state "Fatal Error"
> the status LED lights red
Eliminate the fault:

PowerOn reset
If without success:

Goto Bootloader

PowerOn reset

Reload the runtime system into the device

Reload the application program into the device
If without success:

Hardware error: send device to ifm !
>
Limitations for CAN in this device
17975
FIFO ( F irst I n, F irst O ut) = Operating principle of the stack memory: The data packet that was
written into the stack memory first, will also be read first. Each identifier has such a buffer (queue).
Some Raw-CAN function elements enable transmitting and receiving of several messages in one PLC
cycle as the messages are temporarily stored in a FiFo:
- CAN_TX...,
→ Function elements: transmit RAW-CAN data
-
CAN_RX_ENH_FIFO
(
→ p.
70 )
-
CAN_RX_RANGE_FIFO
(
→ p.
74 )
The number of FIFo messages is limited. The following limitations of the devices are valid:
Device BasicController: CR040n, CR041n,
CR043n
BasicDisplay: CR045n
ioControl: CR205n
SmartController: CR253n
PDM360 NG: CR108n, CR120n
Criterion
max. FiFo transmit
- with FB CAN_TX...
- with FB CAN_TX_ENH...
4 messages
16 messages
4 messages
16 messages
max. FiFo receive
- with FB CAN_RX_..._FIFO
32 messages 32 messages