These blocks initialize and control communication between ibaPDA and the S7 controller.
The ibaREQsym block family allows access to both optimized and non-optimized data blocks. Addressing is purely using the symbol names.
One set of Request blocks has to be called for each Request module (connection) in ibaPDA. The blocks used are part of the iba S7 library, see iba S7 library.
Note |
|
|---|---|
 |
Only use Request blocks from the latest iba S7 library! Request blocks in application examples can be outdated and, thus, cause errors. |
Use different Request block combinations depending on the current system configuration:
|
Request block |
S7-1500 CPU with integrated PN interface |
Recommended call level |
|---|---|---|
|
ibaREQsym_M |
X |
OB1 or OB3x1 |
|
ibaREQsym_UDP |
X |
|
|
ibaREQsym_DB_PDA |
X |
- |
|
ibaREQsym-Interface |
X |
- |
-
ibaREQsym_M (Management) The block realizes the communication with ibaPDA. Ideally, the block is called in OB1.
-
ibaREQsym_UDP (sending of current signal values) The block sends the current signal values to ibaPDA.
-
ibaREQsym_DB_PDA (DB interfaces) This DB acts as an interface to ibaPDA and between the different Request blocks.