FUNCTION_BLOCK RALARM
The RALARM function block is used to receive alarm information of alarms from a PROFIBUS DP or a PROFINET IO subsystem.
Code-Example: receive Alarm
PROGRAM PLC_PRG
VAR
ralarm : CommFB.RALARM;
alarm : CommFB.AINFO_TYPE;
convertID : CommFB.ID_TO_ADDR;
addr : CommFB.ADDR_TYPE;
message : STRING;
END_VAR
ralarm.EN := TRUE;
ralarm.MODE := CommFB.RALARM_MODE.ALL_ALARMS; // receive all alarms from all devices connected to the controller
ralarm.F_ID := PN_Controller.MasterID; // Filter ID, if MODE = ALL_ALARMS use MasterID here, else the ID of a slot/subslot
ralarm(ainfo := alarm);
WHILE(ralarm.NEW) DO
convertID(EN := TRUE, ID := ralarm.ID, ADDR := addr);
IF(convertID.ENO) THEN
IF(addr.SYSTEM = CommFB.IO_SYSTEM_TYPE.PROFINET_IO) THEN
message := 'Station ';
message := concat(message, addr.PN.D.STATIONNAME);
message := concat(message, ' (Slot = ');
message := concat(message, TO_STRING(addr.PN.SLOT));
message := concat(message, ') sends an alarm !');
//Log Alarm to PLC-Logger
CmpLog.LogAdd2(CmpLog.LogConstants.LOG_STD_LOGGER, 555, CmpLog.LogClass.LOG_WARNING, 0, 0, message);
END_IF
END_IF
ralarm(ainfo := alarm); // exec-again
END_WHILE
InOut:
|
Scope |
Name |
Type |
Comment |
|
Input |
EN |
BOOL |
Enable |
|
MODE |
INT |
Function specifier, see RALARM_MODE enum |
|
|
F_ID |
DWORD |
Slot / subslot identification to filter the alarms to receive. | If MODE = RALARM_MODE.ALL_ALARMS user MasterID |
|
|
Output |
ENO |
BOOL |
Function enabled, no error |
|
NEW |
BOOL |
New alarm received |
|
|
STATUS |
DWORD |
Host Controller interface status |
|
|
ID |
DWORD |
Identifier of the slot / subslot the alarm is received from (see: AddressConcept) |
|
|
LEN |
INT |
Length of the received data record |
|
|
Inout |
AINFO |
Alarm data that has been received |
