Moeller XControl XC600, Hardware, Engineering And Function Description, Page: 57 / 78

07/04 AWB2700-1428GB
Function block DiagGetState
53
Diagnostics for the CANopen bus
All the participant bytes must be interrogated for diagnosis.
The participant bytes can be interrogated for error messages
(content>0), starting with Byte 2 (participant with node number 2
(= address)) and continuing to Byte 127.
Information about the participant with node number 2 (= address)
will be available in Byte 2. Node number 1 is assigned to the XC-
NET-CAN module by the configuration.
Byte 129 can not be used for diagnosis, since it does not contain
a general message, as is the case with PROFIBUS-DP.
Function block DiagGetState
The structure GETBUSSTATE (EXTENDEDINFO) provides
information on all the participant in the segment. It is used in
conjunction with the function block DiagGetState (
a Example
programs). The DiagGetState function block must be called for
each participant/node (BUSMEMBERID). Special diagnostic data
can be interrogated at the output array EXTENDEDINFO.
Function
After the parameters have been applied to the function block
inputs DRIVERNAME, DEVICENUMBER and BUSMEMBERID, a “1”
must be applied to the ENABLE input.
If the function block output READY has a “1” and the STATE
output has a “2” (comparison with the defined constants
NDSTATE_DIAGINFO_AVAILABLE = 2), then the output array
EXTENDEDINFO can be interrogated.
Description
h The EXTENDEDINFO output of the DiagGetState function
block is independent of the EXTENDEDINFO ouput of the
GETBUSSTATE structure.
FUNCTION_BLOCK DiagGetState
VAR_INPUT
ENABLE: BOOL;
DRIVERNAME: POINTER TO STRING;
DEVICENUMBER: INT;
BUSMEMBERID: DWORD ;
END_VAR
VAR_OUTPUT
READY: BOOL;
STATE: INT;
EXTENDEDINFO: ARRAY[0..99] OF BYTE ;
END_VAR
Inputs
ENABLE 1 = activate
0 = deactivate
DRIVERNAME The following names are used for the individual
drivers:
Local XI/ON: XcXion
PROFIBUS-DP: XcNetIo
CANopen: XcNetIo
DEVICENUMBER (0, 1, 2) number that is assigned to the
PROFIBUS-DP or CANopen module address. As
a rule, “0” must be entered for local XI/ON.
(“0” must also be entered for an additional
PROFIBUS-DP/CANopen module with the
address CE000. The local XI/ON and PROFIBUS-
DP/CANopen have different driver names)
Number Hardware address of the
module
0 CE000
1 CC000
2 D4000
BUSMEMBERID (Node-) number/address of the participant.
As a rule, a “0” must be entered for local XI/ON.
In a PROFIBUS-DP segment, the first slave
normally receives address 2.
When using CANopen, the addressing (Node
ID) of the participants can start at 1. In the
attached example, the XC-NET-CAN module
receives Node ID 1. Please note with CANopen
the lowest addresses have the highest priority.
Outputs
READY 0 = POU (function block) inactive
1 = block active
STATE The constants are predefined for the values –1,
0, 1, 2, 3:
–1: NDSTATE_INVALID_INPUTPARAM
0: NDSTATE_NOTENABLED
1: NDSTATE_GETDIAG_INFO
2: NDSTATE_DIAGINFO_AVAILABLE
3: NDSTATE_DIAGINFO_ NOTAVAILABLE
EXTENDEDINFO Additional diagnostics data is present in the
100 bytes.