116
ifm
Programming Manual BasicDisplay CR0452 v03.02
05 / 2018
ifm function elements
ifm function elements for the device CR0452
CANOPEN_GETGUARDHBERRLIST
7896
= Get guard and heartbeat error list
Unit type = function block (FB)
Unit is contained in the library
ifm_CANopen_NT_Vxxyyzz.LIB
Symbol in CODESYS:
>
Description
7898
CANOPEN_GETGUARDHBERRLIST lists all nodes in an array for which the master has detected an
error:
• guarding error
• heartbeat error
>
Parameters of the inputs
7899
Parameter
Data type
Description
EXECUTE
BOOL := FALSE
FALSE
TRUE (edge):
execute function element once
otherwise: function element is not active
A function element already started is processed.
CHANNEL
BYTE
CAN interface (1...n) depending on the device
ResetList
(optional use of the parameter)
BOOL := FALSE
Reset error list
TRUE:
Provide the error list as well as number of faulty
nodes at the output and then reset.
FALSE:
function element is not executed
>
Parameters of the outputs
7900
Parameter
Data type
Description
N_NODES
WORD
Number of nodes with heartbeat or guarding error
0 = none of the nodes has a guarding or heartbeat error
NODEID
ARRAY
[0..MAXGUARDERROR] OF
BYTE
List of node IDs with heartbeat or guarding error.
The most recent entry is in index 0.
MAXGUARDERROR depends on device
→ chapter
Limitations for CANopen in this device
(→ p.
RESULT
BYTE
feedback of the function block
(possible messages → following table)
Possible results for RESULT:
Value
dec | hex
Description
0
00
FB is inactive
1
01
function block execution completed without error
8
08
FB is active
– not yet processed
242
F2
Error: setting is not possible