Error And State Information For The Modules - Leuze electronic MSI 400 Series Manual

The CRCs are each 4 bytes in length. Data set 2 can be read only.
The project CRC with Modbus/TCP is transmitted in Big Endian format.
The system CRC is available from module version B-01.01 for PROFIBUS DP and EtherCAT.
3.3.5

Error and state information for the modules

Data set 3 and 4 contain the state information for the modules that will be transferred to the network.
Ten bytes are transmitted for MSI 4xx controller module. For each MSI-EM-I8 and MSI-EM-IO84 I/O mod-
ule, four bytes are transmitted in the Little Endian format, e.g. as a 32-bit word, with the first byte being
placed into the least significant byte of the whole number (extreme left) and the fourth byte into the most
significant byte of the whole number (extreme right).
Data sets 3 and 4 cannot be adapted.
Module status bits of the controller module MSI 4xx
The module state bits have the following meaning, if not otherwise indicated:
0 = error
1 = no error
Reserved bits have the value 1
NOTICE
i
You can find an explanation of the technical terms used below here: Abbreviations and Defini-
tions [chapter 1.5]
Tab. 3.6: Meaning of module state bits of controller module MSI 4xx (only for Modbus)
Bit 7
Byte 0 B2 status
Byte 1 Module
state out-
put data
Byte 2 I8 vs.
T2/4 test
pulse
compar-
ison
Byte 3 I16 vs.
T2/4 test
pulse
compar-
ison or
HW limit
frequency
I16
Byte 4 0: Cable
break at
I16
1: OK or
not used
Leuze electronic
Bit 6 Bit 5
Collective B1 status
error fast
shut-off
Module Reserved Reserved IQ3+IQ4
state of
input data
I7 vs. I6 vs.
T1/3 test T2/4 test
pulse pulse
compar- compar-
ison ison
I15 vs. I14 vs.
T1/3 test T2/4 test
pulse pulse
compar- compar-
ison or ison or
HW limit HW limit
frequency frequency
I15 I14
0: Cable 0: Cable
break at break at
I15 I14
1: OK or 1: OK or
not used not used
Bit 4 Bit 3
Configura A1 status
tion state
power re-
quirement
0: Over-
current
1: no
overcur-
rent
I5 vs. I4 vs.
T1/3 test T2/4 test
pulse pulse
compar- compar-
ison ison
I13 vs. I12 vs.
T1/3 test T2/4 test
pulse pulse
compar- compar-
ison or ison
HW limit
frequency
I13
0: Cable IQ4 vs.
break at T2/4 test
I13 pulse
compar-
1: OK or
ison
not used
MSI 400
Product description
Bit 2 Bit 1
External Internal
module module
state state
IQ1+IQ2 Q3+Q4
power re- power re-
quirement quirement
0: Over- 0: Over-
current current
1: no 1: no
overcur- overcur-
rent rent
I3 vs. I2 vs.
T1/3 test T2/4 test
pulse pulse
compar- compar-
ison ison
I11 vs. I10 vs.
T1/3 test T2/4 test
pulse pulse
compar- compar-
ison ison
IQ3 vs. IQ2 vs.
T1/3 test T2/4 test
pulse pulse
compar- compar-
ison ison
Bit 0
Reserved
Q1+Q2
power re-
quirement
0: Over-
current
1: no
overcur-
rent
I1 vs.
T1/3 test
pulse
compar-
ison
I9 vs.
T1/3 test
pulse
compar-
ison
IQ1 vs.
T1/3 test
pulse
compar-
ison
19