Rockwell Automation 9323-PA1E USER MANUAL APS 6.0 - Manual (Page 272)

Preface
Advanced Programming Software User Manual
13–22
If you: Then:
went online this procedure is finished
did not go online
1. Repeat steps 4-6.
2. Set F4 Use Modem to NO.
3. Repeat steps 8-9 on page
13-21.
To switch the channel back to user mode, follow the steps above, but for the modem
initialization string (step 7), enter
character>. The default is \1bU .
Considerations When Communicating as a DF1 Slave on
a Multi-drop Link
When communication is between either APS and an SLC 5/03 processor or between
two SLC 5/03 processors via a slave-to-slave connection on a larger multi-drop link,
the devices depend on a DF1 Master to give each of them polling permission to
transmit in a timely manner. As the number of slaves increase on the link (up to
255), the time between polls for APS or the SLC 5/03 processor also increases.
Additionally, the amount of time between polls to any one APS and/or SLC 5/03
processor also increases. This increase in time may become larger if you are using
low baud rates.
As these time periods grow, the following values may need to be changed to avoid
loss of communication:
•
APS – poll timeout and reply timeout values
•
SLC 5/03 processor – poll timeout and edit resource/file owner timeout values
To change the poll timeout and reply timeout values for APS, do the following:
1. At the main menu press [F2] Online Configuration , then
[F2] Select Device until “Half-Duplex Slave” is displayed.
2. Press [F7] Device Configuration and then [F10] Half Duplex .
3. Change the poll timeout and reply timeout values using the appropriate function
keys.
4. Press [F9] Save to File , then [ESC] , [ESC] , [ESC] and return to the
main menu.