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Value
Cause
byte 1
5
Internal error, system error
6
Range exceeded at the inputs
7
Range exceeded at the out‐
puts
1)
The analog outputs retain their last specified value.
Diagnostics via status bytes 0/1
In status byte 0, the set operating modes are reflected e.g. "0x55" if control byte 0 = 0x55 has
been specified (voltage on all channels).
In the event of an error, the error bit is set in status byte 1 (bit 7). In the event of an error in one
channel, all channels are deactivated.
Table 12-66
Input image of analog inputs (excerpt)
Byte
Bit7
m+0
0
m+1
Error bit
12.3.6
Technical data
Table 12-67
Safety
Degree of protection
Protection class
Approvals
Electrical data
Rated voltage
Rated current
Power consumption at rated load
Power loss
Mechanical data
Dimensions WxHxD
Weight, approx.
For detailed technical data relating to the inputs and outputs, see the "Connecting" chapter.
X111, X222 and X333 digital inputs/outputs (Page 140)
Analog X3 inputs/outputs (Page 145)
NCU 1750
Equipment Manual, 01/2022, A5E45627807B AE
Effect
The "PNFault" LED is activated.
The outputs are switched off.
The value 0x80 is stored in status byte 1.
Bit6
Bit5
0
0
0
0
Technical data of the I/O module
1)
Bit4
Bit3
0
0
0
0
IP 00 according to EN 60529
III; DVC A, (PELV) acc. to EN 61800-5-1
cULus, CE
24 V DC
0.7 A
19 W (without digital outputs)
18 W
150 x 300 x 35 mm
0.9 kg
Connectable components
12.3 PP 72/48D PN 2/2A PN
Remedy
The firmware has detected a system error,
this status can only be exited by means of
a switch-on / switch-off.
Check input circuit and adjust, if required.
Correct the values in the user program.
Bit3
Bit1
0
0
0
0
Bit0
0
0
157
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