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ifm
System Manual
ecomat
mobile
PDM360NG (CR1080, CR1081, CR9042) Target V01
2011-07-28
CAN in the PDM360
CAN units acc. to SAE J1939
231
J1939_DM1TX
7746
= J1939 Diagnostic Message 1 TX
Unit type = function block (FB)
Contained in the library:
ifm_J1939_NT_Vxxyyzz.LIB
Available for the following devices:
- BasicController: CR040n
- BasicDisplay: CR0451
- PDM360NG: CR108n, CR9042
Symbol in CoDeSys:
Description
7747
With J1939_TX_DM1 (DM =
D
iagnostic
M
essage) the controller can only transmit an active error
message to the CAN stack.
> This message is stored in the hardware configuration.
> The message is marked "active" and transmitted once per second as DM1.
> If the error has already occurred, the event counter is incremented.
NOTE: The event counter is managed by the CAN stack.
> A disjunction of all bits of the trouble codes is executed. As soon as a bit is set in one of the
trouble codes, it is equally set in the lamp state.
Upon arrival of a request at DM2, the CAN stack can read the according information from the
hardware configuration and transmit it.
> When a DM3 message arrives, all inactive errors are deleted in the error memory in the hardware
configuration.