Omron CJ1W-C113 - REV 02-2008, Operation Manual

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Reading Data with the READ DATA Bit Section 5-3
READ DATA Procedure
1,2,3... 1. Set common parameters. (Refer to 4-3 Common Parameter Area.)
m: Set the operating data area either to DM or to EM.
m+1: Set the beginning word of the operating data area (l).
m+2: Set the axis parameter designation.
2. Powering up again or restart.
The data for the common parameters set in 1 above will be enabled.
3. Set the operating data area.
I+4:
Total number of words to be read from the PCU (Hex)
I+5: Beginning address of PCU’s data area (Hex).
l+6: The area in the CPU Unit (DM/EM) where the data will be stored.
I+7: Beginning word address (Hex) of CPU Unit’s DM or EM area
where read data will be stored.
4. Execute READ DATA.
Turn the READ DATA Bit (word n+1, bit 13) from OFF to ON.
The operations in (1) and (2) above are required when using the PCU for the
first time or when modifying the data in the common parameter area.
5-3-2 Data Settings Required for Reading Data
Beginning Words of Memory Areas
The beginning words of the operating memory area, the operating data area
and common parameter area used for a PCU are determined (or set) accord-
ing to the following.
• Beginning word of the operating memory area, n = CIO 2000 + 10
×
unit
number
• Beginning word of the common parameter area, m = 100
×
unit
number
• Beginning word of the operating data area, l, is specified in m and m+1.
Operating Memory Area
Word Name Bit Reference
m Operating data area designa-
tion 00 to 15 SECTION 4
m+1 Beginning word of operating
data area 00 to 15
m+2 Axis parameter designation 00 to 15
Name Model Operating
memory area
Bit Contents
WRITE DATA NC4 @ 3
NC2 @ 3
NC1 @ 3
n+1
n+1
n+1 13 Starts reading data at the
rising edge.
Data Transfer-
ring Flag NC4 @ 3
NC2 @ 3
NC1 @ 3
n+8
n+4
n+2 14 1: Data is being transferred
0: Power up or restart;
transfer completed; transfer
unsuccessful