Control And Status Bytes During Register Communication; Table 56: Register 43; Table 57: Control Byte Ch1_C0 During Register Communication; Table 58: Status Byte Ch1_S0 During Register Communication - WAGO 750-451 Manual

68 Commissioning

Table 56: Register 43

Register
43
Bit 0 ... 15: Upper user limit value
–32768 ... 32767
8000 ... 7FFF
Value range depending on the
sensor type set
(see chapter "Process Data" >
"Overview of Sensor Types")
This register contains the upper user limit value. The resistance/temperature value calculated by the
I/O module is compared to the limiting value entered by the user. If the resistance/temperature
value calculated by the I/O module exceeds the value entered here, the I/O modules signals a
limiting value overrange.
The scaling of the value to be entered here depends on the sensor type set.
Diagnostics for the upper user limit value is enabled if bit 11 in register 35 is set.
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7.1.2

Control and Status Bytes during Register Communication

The following tables show the assignment of the control and status bytes for
register communication. Control and status bytes are implemented identically for
all channels. Therefore, the following description in this chapter is representative
for all control and status bytes of the I/O module.
With the bits 0 ... 5 and 7 in the respective status byte, register communication is
acknowledged by the I/O module.

Table 57: Control Byte CH1_C0 During Register Communication

Bit 7
Reg_Com
Register number Register number of the selected function (see chapter "Startup" > "Register
R/W
Reg_Com

Table 58: Status Byte CH1_S0 During Register Communication

Bit 7
Reg_Com
Register number Register number of the selected function (see chapter "Startup" > "Register
R/W
Reg_Com
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Function
Upper user limit value
Value range (raw), decimal, 16-bit integer
Value range (raw), hexadecimal, 16-bit integer
Value range (scaled), decimal, 16-bit unsigned integer
Value range (scaled), hexadecimal, 16-bit unsigned integer
Resolution:
Unit
Bit 6 Bit 5
R/W
Assignment")
0: Read access
1: Write access
1: Register communication
Bit 6 Bit 5
R/W
Assignment"), mirrored from control byte CH1_C0
0: Read access (acknowledgement)
1: Register communication, mirrored from control byte CH1_C0
Memory Access
EEPROM R/W
1
–
Bit 4 Bit 3
Register number
Bit 4 Bit 3
Register number
WAGO-I/O-SYSTEM 750
750-451 8 AI RTD
Default setting
0x7FFF
Bit 2 Bit 1
Bit 2 Bit 1
Manual
Version 1.1.0
Bit 0
Bit 0