2-5
Section
Using the Functions
21
Set Values and Stored Values
Item
Contents
Use designation
0:
Do not use.
1:
Use.
Input signal range
00:
–10 to 10 V
01:
0 to 10 V
10:
1 to 5 V/4 to 20 mA (See note.)
11:
Same as for setting “10” above.
Mean value processing
setting
0000:
No mean value processing
0001:
Mean value processing for 2 buffers
0002:
Mean value processing for 4 buffers
0003:
Mean value processing for 8 buffers
0004:
Mean value processing for 16 buffers
Note
The input signal range of 1 to 5 V (4 to 20 mA) is switched according to the input
terminal connections.
2-5
Using the Functions
2-5-1 Setting Inputs and Signal Ranges
The Analog Input Unit only converts analog inputs specified by input numbers 1
to 8. In order to specify the analog inputs to be used, turn ON from a Peripheral
Device the DM bits shown in the following diagram.
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
Bit
Input 8
Input 7
Input 6
Input 5
Input 4
Input 3
Input 2
Input 1
DM (m)
0: Do not use
1: Use
The analog input sampling interval can be shortened by setting any unused input
numbers to 0.
Sampling interval = (1 ms) x (Number of inputs used)
For the DM word addresses, m = 1000 + 100 x unit number (Units #A to #F = Unit
numbers 10 to 15).
Any of four types of input signal range can be selected for each of the eight inputs
(input numbers 1 to 8). In order to specify the input signal range for each input,
set from a Peripheral Device the DM bits shown in the following diagram.
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
Bit
Input 8
Input 7
Input 6
Input 5
Input 4
Input 3
Input 2
Input 1
DM (m+1)
00: -10 to 10 V
01: 0 to 10 V
10: 1 to 5 V / 4 to 20 mA
11: Same as 10 above.
Switching between the options of “1 to 5 V” and “4 to 20 mA” is done by means of
the input terminal connections.
Input Numbers
Input Signal Range
