317
Exchanging Data with the CPU Unit Section 7-5
The input disconnection detection function can be used when the input signal
range is set for 1 to 5 V (4 to 20 mA).
Allocation for Adjustment
Mode
For adjustment mode, set bits 00 to 07 in D(m+18) to 01 hex.
The allocation of CIO words and bits is shown in the following table.
Set Values and Stored
Values
Refer to 7-9-1 Adjustment Mode Operational Flow for further details.
Note For the CIO word addresses, n = CIO 2000 + (unit number x 10).
Input signal range Voltage/current
1 to 5 V 0.3 V max.
4 to 20 mA 1.2 mA max.
I/O Word Bits
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Output
(CPU to
Unit)
n Not used. Inputs and outputs to be adjusted
16
1
16
0
n + 1 Not used. Not used. Clr Set Up Down Gain Off-
set
n + 2 Not used.
n + 3 Not used.
n + 4 Not used.
n + 5 Not used.
n + 6 Not used.
n + 7 Not used.
Input
(Unit to
CPU)
n + 8 Conversion value or set value at time of adjustment
16
3
16
2
16
1
16
0
n + 9 Alarm Flags Disconnection detec-
tion
Not used.
Input
4
Input
3
Input
2
Input
1
Item Contents
Input or output to be
adjusted
Sets input or output to be adjusted.
Leftmost digit: 1 (output) or 2 (input)
Rightmost digit: 1 to 2 (output)/ 1 to 4 (input)
Offset (Offset Bit) When ON, adjusts offset error.
Gain (Gain Bit) When ON, adjusts gain error.
Down (Down Bit) Decrements the adjustment value while ON.
Up (Up Bit) Increments the adjustment value while ON.
Set (Set Bit) Sets adjusted value and writes to EEPROM.
Clr (Clear Bit) Clears adjusted value. (Returns to default status)
Conversion value for
adjustment
The conversion value for adjustment is stored as 16 bits
of binary data.
Disconnection detection 0: No disconnection
1: Disconnection
Alarm Flags Bit 12: Input value is outside adjustment limits
(in adjustment mode)
Bit 13: I/O number setting error (in adjustment mode)
Bit 14: EEPROM write error (in adjustment mode)
Bit 15: Operating in adjustment mode.
(Always ON in adjustment mode.)
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