Rockwell Automation 1398-PDM-xxx IQ Master Version 3.2.4 for IA-2000 and IQ-5000 Positioning Drive Modules, IQ-55 - Manual (Page 345)

323 Publication 1398-PM601A-EN-P — October 2000
APPENDIXES
DDE Server
IQ Master supports DDE (Dynamic Data Exchange) using the DDEML (Dynamic Data Exchange Manage-
ment Library). IQ Master is configured as a server only; another application (the client) can query IQ Master
for information about variables that will be gathered over the serial link from the currently connected
ULTRA Plus or IQ and sent to the client. In addition, the client can set variables to a specific value and also
send executable commands to the ULTRA Plus or IQ.
The only transactions supported by IQ Master are the Request (request data), Poke (write data), and Execute
Transactions. IQ Master does not support Advise Transactions.
To enable DDE conversations with IQ Master, a command-line argument is used when starting IQ Master.
The command-line argument is either ’/d’ or ’/D’ (for example, pathname\IQMASTER.EXE /d where path-
name is the drive and directory path of IQ Master).
The Service Name to establish a conversation with IQ Master is ’IQMASTER’. The Topic name is ’System’.
Item names supported are shown below. The clipboard format for passing data is CF_TEXT. All data passed
will be in the form of strings using the DDEML DdeClientTransaction() function.
To establish a conversation with IQ Master and a client, IQ Master should be running before the client starts.
If IQ Master is not running before starting the client, the client should try to run IQ Master using the Win-
Exec() function with a ’/d’ or ’/D’ command-line argument as the optional parameter.
ULTRA Plus or IQ variables (known as Item names) that can be queried using DDE include:
Adc1 Adc2 Adc3 Adc4
Adc5 Addr Fe Fvel1
Gpos I1p1 I1p2 I2p1
I2p2 Iave Icmd Ix1p1
Ix1p2 Ix2p1 Ix2p2 Lpos
Pcmd Pext Pfe Pgen
Picmd Pjog Pos1 Pos2
Pos3 Posn Pvel1 Rfdr
Vcmd Vel1 Vel2