155
Analog Input Functions
Section 7-9
7-9-3
Specification of Analog Input Functions
Note
As a reference, the characteristic of the input response (step response) when
an external input signal is modified step-wise within 10 V range is as follows:
Item
Specification
Input signals
Voltage inputs, current inputs
No. of analog inputs
1 input
Input signal ranges
Select from the followings in the unit setup area (DM 6612 (analog input
range)):
-
10 to +10 V, 0 to 10 V, 0 to 5 V, 1 to 5 V, or 4 to 20 mA
A/D conversion time
50
m
s
Input response time
1.5 ms or less (*)
Resolution
-
10 to +10 V:1/16,000 (14 bits)
0 to 10 V: 1/8,000 (13 bits)
0 to 5 V: 1/4,000 (12 bits)
1 to 5 V: 1/4,000 (12 bits)
4 to 20 mA: 1/4,000 (12 bits)
Analog input refresh method
Analog input value can be acquired by either of the following methods:
• The data in AR 02, which is stored after execution of END instruction,
of auxiliary memory bits on the unit is acquired. (END refresh method)
• Acquires the data by executing PRV instruction. (Immediate refresh
method with instruction)
Analog input value storage area
AR 02 of auxiliary memory bits on the unit
With the immediate refresh method with instruction selected, an analog
input value at the time can be acquired by executing PRV instruction.
Overall accuracy
Voltage input:
Current input:
±
0.2% (23
±
2
°
C)
±
0.4% (0 to 55
°
C)
±
0.4% (23
±
2
°
C)
±
0.6% (0 to 55
°
C)
Function
Offset/gain adjustment
It is possible to proofread and correct inputs corresponding to the con-
nected devices. In "program" mode, specify an offset or gain value with
adjustment enable flag (AR 18 bit 00, AR 18 bit 03) ON. Transmitting
inputs that are to be an offset or a gain value from a device, monitoring
adjusting value monitor bits (AR 19/20) from a peripheral enables proof-
reading and correcting. Additionally, specifying the number of times of an
average value in AR 23 enables monitoring with an averaged offset or an
averaged gain value.
0.5
1
0
Response (%)
100%
80%
50%
1.5 Time
(ms)
Summary of Contents for CS1W-HCA12-V1
Page 2: ......
Page 6: ...vi...
Page 20: ...xx Conformance to EC Directives 7...
Page 38: ...18 Models and System Configurations Section 1 2...
Page 78: ...58 Fail safe Circuits Section 3 5...
Page 138: ...118 AR Area Section 6 4...
Page 204: ...184 Improved Instructions Section 7 14...
Page 222: ...202 Cycle Time Section 8 3...
Page 240: ...220 Troubleshooting Flowcharts Section 9 5...
Page 244: ...224 Precautions when Using the CX Programmer Appendix A...
Page 252: ......
Page 253: ......
