68
Commissioning
WAGO-I/O-SYSTEM 750
750-451 8 AI RTD
Manual
Version 1.1.0
Table 56: Register 43
Register
Function
Memory
Access
Default setting
43
Upper user limit value
EEPROM
R/W
0x7FFF
Bit 0 … 15: Upper user limit value
–32768 … 32767
Value range (raw), decimal, 16-bit integer
8000 … 7FFF
Value range (raw), hexadecimal, 16-bit integer
Value range depending on the
sensor type set
(see chapter “Process Data” >
“Overview of Sensor Types”)
Value range (scaled), decimal, 16-bit unsigned integer
Value range (scaled), hexadecimal, 16-bit unsigned integer
Resolution: 1
Unit
–
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
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Reg_Com
R/W
Register number
Register number Register number of the selected function (see chapter “Startup” > “Register
Assignment”)
R/W
0: Read access
1: Write access
Reg_Com
1: Register communication
Table 58: Status Byte CH1_S0 During Register Communication
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Reg_Com
R/W
Register number
Register number Register number of the selected function (see chapter “Startup” > “Register
Assignment”), mirrored from control byte CH1_C0
R/W
0: Read access (acknowledgement)
Reg_Com
1: Register communication, mirrored from control byte CH1_C0
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