FB_EcSetMasterState
The EtherCAT Master state, assigned in the variable reqState, can be requested by the master with the functionblock FB_EcSetMasterState
The functionblock waits for the maximum tTimeout time allowed until the new state is set.
VAR_INPUT
VAR_INPUT
sNetId : T_AmsNetId;
bExecute : BOOL;
tTimeout : TIME := T#10s;
reqState : WORD;
END_VAR
sNetId: This is a string that contains the AMS network identifier of the EtherCAT master device.
bExecute: The block is activated by a rising edge at this input.
tTimeout: Maximum time allowed for the execution of the function block.
reqState: EtherCAT state requested by the master. Possible values for reqState are:
Constant | Value | Description |
|---|---|---|
EC_DEVICE_STATE_INIT | 0x01 | Request init state from the master |
EC_DEVICE_STATE_PREOP | 0x02 | Request pre-operational state from the master |
EC_DEVICE_STATE_SAFEOP | 0x04 | Request safe-operational state from the master |
EC_DEVICE_STATE_OP | 0x08 | Request operational state from the master |
VAR_OUTPUT
VAR_OUTPUT
bBusy : BOOL;
bError : BOOL;
nErrId : UDINT;
currState : WORD;
END_VAR
bBusy: This output is set when the function block is activated and remains set until an acknowledgement is received.
bError: This output is set up after the bBusy output has been reset if there has been an error in transmission of the command.
nErrId: Supplies the ADS error code associated with the most recently executed command if the bError output is set.
currState: Current EtherCAT state of the master.
Requirements
Development Environment | Target System | PLCLibraries to include |
|---|---|---|
TwinCAT v2.10.0 Build > 1307 or higher | PC or CX (x86) | TcEtherCAT.Lib |