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D-4 Micro PLC Programmer’s Guide – April 1994
GFK-0804B
Viewing PLC Data in Windows
Follow these steps:
1. First, use the Micro PLC programming software to download the file DDE1.LAD
from the \MICRO\DDE subdirectory to the Micro PLC.
2. Return to DOS and call up Windows.
3. From the Program Managers menu bar, select “File/Run”.
4. Enter the path\filename of the MICROWIN.EXE program
(i.e. C:\MICRO\DDE\MICROWIN.EXE) and click OK.
5. Select “Settings/Serial Port Settings” from the MICROWIN menu bar.
6. Change the COM Port to reflect the serial port where the Micro PLC is connected.
7. Select “Actions/Toggle StopRun Driver” from the MICROWIN menu bar. This will
start the driver communication with the PLC.
8. Select “Options/Driver Messages” from the MICROWIN menu bar.
9. Select one of the links in the “Topic/Item List”. The Data associated with this item
will be displayed in the selected item editbox. The demonstration program lists these
four links:
CPUID/R,1 – #convs=0,#Blk=3,A=0,L=2
CPUID/R,2 – #convs=0,#Blk=3,A=0,L=2
CPUID/I,1 – #convs=0,#Blk=2,A=0,L=1
CPUID/O,1 – #convs=0,#Blk=1,A=0,L=1
Each line above displays the link information in the form:
[TOPIC] / [ITEM] – #conv=[c],#Blk=[b],A=[a],L=[l] where,
[TOPIC} = “CPUID” and is the same for all four links.
[ITEM] = the item of each one is different and this is what determines what
data value in the PLC is being addressed. The item of the first one is “R,1”
which represents Register 1. The second one is “R,2” which represents Register
2. The third one is “I,1” which represents the state of Input 1. The fourth is “O,1”
which represents the state of Output 1.
[c] = refer to the driver help file.
[b] = refer to the driver help file.
[a] = refer to the driver help file.
[l] = refer to the driver help file.