Function
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FTC470XDP_D00111_00_M_XXEN/02.2015
6.3 Requesting alarm messages
Alarm messages occur when the preset value of a device falls below or exceeds the response value.
Depending on the device, these can be measuring values or status messages. Alarm messages are
provided by BMS devices and are requested by the BMS Master. Because of their safety-relevant
meaning alarm messages have high priority on the bus.
6.3.1
Number of all alarm messages of a BMS device
Writing to FTC470XDP (= output of the PROFIBUS Master)
Table 6.1: Master request: number of alarm messages
Reading from FTC470XDP (= input data of the PROFIBUS Master)
Table 6.2: FTC answer to: number of alarm message
Function
Devices
Channel
No.
BMS
command
Data
Type
Data
Value
Request for the current number of alarm messages
All
0
1
0
0
No device with such an address available
All
0
1
0
0
No alarm messages
All
0
1
1
0
Number of alarm messages
All
0
1
1
value
Number of alarm messages
Not all the channels have been measured yet
EDS…
0
1
2
value
Number of alarm messages occurred by pressing the
test button or by activating the "TEST" menu inte-
grated in the device (for example)
107TD47
IRDH…
PRC487
0
1
3
value
Number of alarm messages occurred during a test ini-
tiated via the interface
107TD47
IRDH…
MK2418…
0
1
4
value
Request for a self test for an insulation monitoring
device
MK2418…
0
1
5
address
Switching off the buzzer for alarm messages of a
device
MK2418…
0
1
6
address
