Omron CJ1W-AD041-V1, Operation Manual

Page: 128 / 427

105
Analog Input Functions and Operating Procedures Section 3-6
Note Use 250
µ
s instead of 1 ms is set to a conversion time of 250
µ
s and
resolution of 8,000.
The conversion values in words for inputs that have been set to “Not used” will
always be “0000.”
For the DM word addresses, m = (unit number x 100)
Input Signal Range Any of four types of input signal range (–10 to 10 V, 0 to 10 V, 1 to 5 V, and 4
to 20 mA) can be selected for each of the inputs. To specify the input signal
range for each input, set from a Programming Device the D(m+1) bits in the
DM Area as shown in the following diagram.
Note There are only four inputs for the CJ1W-AD041-V1.
Note 1. For the DM word addresses, m = (unit number x 100)
2. The input signal range of “1 to 5 V” or “4 to 20 mA” is switched using the
voltage/current switch.
3. After making the DM settings from a Programming Device, it will be neces-
sary to either turn the power to the PLC OFF and ON, or turn ON the Spe-
cial I/O Unit Restart Bit in order to transfer the contents of the DM settings
to the Special I/O Unit.
Reading Conversion
Values Analog input conversion values are stored for each input number, in CIO
words n+1 to n+8. With the CJ1W-AD041-V1, the values are stored in CIO
words n+1 to n+4.
Note For the CIO word addresses, n = CIO 2000 + (unit number x 10).
Use MOV(021) or XFER(070) to read conversion values in the user program.
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Bit
DM (m+1)
Input 2 Input 1
00: − 10 to 10 V
01: 0 to 10 V
10: 1 to 5 V / 4 to 20 mA
11: 0 to 5 V
Input 4 Input 3 Input 6 Input 5 Input 8 Input 7
Word Function Stored value
n+1 Input 1 conversion value 16-bit binary data
n+2 Input 2 conversion value
n+3 Input 3 conversion value
n+4 Input 4 conversion value
n+5 Input 5 conversion value
n+6 Input 6 conversion value
n+7 Input 7 conversion value
n+8 Input 8 conversion value