113
Programless Communications
Section 5-6
Setting Changes
To change EJ1G settings from the PLC, first change the values in the Down-
load Area in the PLC memory and then set the Setting Change Request Bits.
The EJ1G will then read the Download Area in the PLC memory and change
the corresponding settings.
• Single Action
Any parameters in the download area settings that have changed from the
previous values are written.
Upload Area
Download Area
Value
Address
Value
Address
m+0
m+1
m+2
m+4
···
n+0
n+1
n+2
n+4
m+3
n+3
PLC
Upload Area
Download Area
Value
0001
0001
Operation Command
Response Bits
Address
Value
Address
m+0
m+1
m+2
m+4
···
n+0
n+1
n+2
n+4
Operation Command
Request Bits
yyyy
Communications
Status
m+3
n+3
Operation
Command Code
PLC
EJ1G
HFU
TC4/TC2
yyyy
Read Response
Bits
Monitor Value
Read Request Bits
0000
0000
Operation Command
Response Bits
Operation Command
Request Bits
yyyy
Communications
Status
Operation
Command Code
Read Response
Bits
Monitor Value
Read Request Bits
4. The EJ1G sets the Setting
Change Response Bits.
6. The EJ1G clears the Setting
Change Response Bits.
5. The Setting Change Request
Bits are cleared by the PLC.
2. The Setting Change Request
Bits are set by the PLC.
3. The EJ1G reads
the set value.
1. Set value is changed by
the PLC.
Summary of Contents for EJ1G
Page 3: ...iv ...
Page 17: ...xviii ...
Page 21: ...xxii ...
Page 53: ...32 Unit Configuration Examples Section 2 4 ...
Page 69: ...48 Changing SPs During Operation Section 3 3 ...
Page 81: ...60 Other Functions Section 4 5 ...
Page 145: ...124 Other HFU Functions Section 5 7 ...
Page 167: ...146 Detailed Description of Services Section 6 4 ...
Page 229: ...208 Parameters That Can Be Allocated for Programless Communications Appendix ...
Page 237: ......