Hi.

This is with reference to Dynamic Configuration of Ethercat slaves in SP16
(https://help.codesys.com/webapp/RMyqti2qMZZtTODOaHlN71rMvfI%2Ffld-DynamicConfig;product=EtherCATStack;version=3.5.16.0)

I'm trying to understand the example but i have a several questions about it.

Following code snippet is extracted from the example.

CASE readeeprom.dwVendorID OF
  2: // Beckhoff
      CASE readeeprom.dwProductID OF
          72100946: // EK1100 -> nothing to add
              xKnown := TRUE;
          131608658: // EL2008                  
              pSlave^.AddSyncManager(16#0F00, 1,16#44, TRUE, 1);
              pSlave^.AddFMMU(0, 1, 0, 7, 16#0F00, 0, 2, 1);
              xKnown := TRUE;
          66072658: // EL1008;
              pSlave^.AddSyncManager(16#1000, 1,16#0, TRUE, 1);
              pSlave^.AddFMMU(0, 1, 0, 7, 16#1000, 0, 1, 1);
              xKnown := TRUE;
          270807122: // EL4132
              pSlave^.AddSyncManager(16#1800, 246,16#26, TRUE, 3);
              pSlave^.AddSyncManager(16#18F6, 246,16#22, TRUE, 2);
              pSlave^.AddSyncManager(16#1000, 4,16#24, TRUE, 1);
              pSlave^.AddSyncManager(16#1100, 0,16#20, TRUE, 0);
              pSlave^.AddFMMU(0, 4, 0, 7, 16#1000, 0, 2, 1);
              pSlave^.AddFMMU(0, 1, 0, 0, 16#80D, 0, 1, 1);
              xKnown := TRUE;
          205926482: // EL3142
              IF readeeprom.byMailboxProtocol > 0 THEN
              // mailbox from eeprom
                  pSlave^.AddSyncManager(readeeprom.wRcvMbxOffset, readeeprom.wRcvMbxSize,16#26, TRUE, 3);
                  pSlave^.AddSyncManager(readeeprom.wSndMbxOffset, readeeprom.wSndMbxSize,16#22, TRUE, 2);
              END_IF
              pSlave^.AddSyncManager(16#1100, 0,16#4, TRUE, 1);
              pSlave^.AddSyncManager(16#1180, 6,16#20, TRUE, 0);
              pSlave^.AddFMMU(0, 6, 0, 7, 16#1180, 0, 1, 1);
              pSlave^.AddFMMU(0, 1, 0, 0, 16#80D, 0, 1, 1);

1) AddSyncManager Method

wStartAddress (i.e.16#1800) => is this user-defined or device specific value?

usiMode : (i.e. 16#20) => is there any pre-defined value depending on type of the device?

2) For analog input/output devices(EL4132, EL3142), AddSyncManager are used four times and AddFMMU are used twice, why?

3) For analog Input device (EL3142) , why a conditional statement is used for AddSyncManager as follows?

IF readeeprom.byMailboxProtocol > 0 THEN
      // mailbox from eeprom
          pSlave^.AddSyncManager(readeeprom.wRcvMbxOffset, readeeprom.wRcvMbxSize,16#26, TRUE, 3);
          pSlave^.AddSyncManager(readeeprom.wSndMbxOffset, readeeprom.wSndMbxSize,16#22, TRUE, 2);
 END_IF

a detailed documentation on the Dynamic Config feature would be much appreciated.

1)*AddSyncManager Method

wStartAddress (i.e.16#1800) => is this user-defined or device specific value?

usiMode : (i.e. 16#20) => is there any pre-defined value depending on type of the device? *

All data is device specific. Each manufacturer of the slave has defined the data. It is all inside the ESI file
2) For analog input/output devices(EL4132, EL3142), AddSyncManager are used four times and AddFMMU are used twice, why?
This is device specific. The EL4132/E3142 are using CoE as a Mailbox protocol, therefore a sync manager is required for the mailbox communication

3) For analog Input device (EL3142) , why a conditional statement is used for AddSyncManager as follows?
IF readeeprom.byMailboxProtocol > 0 THEN
// mailbox from eeprom
pSlave^.AddSyncManager(readeeprom.wRcvMbxOffset, readeeprom.wRcvMbxSize,16#26, TRUE, 3);
pSlave^.AddSyncManager(readeeprom.wSndMbxOffset, readeeprom.wSndMbxSize,16#22, TRUE, 2);
ENDIF

It is only an example how to get the information from the EEprom, if a device supports the mailbox

Thank you for your reply Mr. Edwin
I have requested the relevant information to Beckhoff and Crevis.
Thanks again.