Specifications

AP - 12 Applications Ver. 0002

Signals from the Drive to the PLC 50/55.

The Drive offers two bits to the PLC 50/55 to indicate the operating status.

These are: DRSTAFn and DRSTASn. The table below shows the meaning of these signals.

DRSTAFn (DRive STAtus First n) (n=1..7,S,S2,AS) (M5603, M5653, M5703, M5753, M5803, M5853

and M5903 at the axes. M5953, M5978 and M5557 at the spindles)

DRSTASn (DRive STAtus Second n) (n=1..7,S,S2,AS) (M5604, M5654, M5704, M5754, M5804,

M5854 and M5904 at the axes. M5954, M5979 and M5556 at the spindles)

Function: They are the bits indicating the Drive status to the PLC. This way, the PLC program

will handle the drive control signals depending on its status.

Possible values: 0,1 with the meaning explained in the next table.

Important:

As a general rule, the PLC assigns the id numbers to all the axis variables in the following

order: X, Y, Z, U, V, W, A, B and C. The SERCOS id numbers (SERCOSID,

Node_Select) assigned to the drives have nothing to do with this.

If the machine has three axes (for example: X,Y,B):

Variables SPENA1, DRENA1, and bits DRSTAF1 and DRSTAS1 will correspond to the X axis,

those with the index 2 to the Y axis and those of the index 3 to the B axis.

Those with the S, S1 and AS index will correspond to the main, second and auxiliary spindle

respectively.

The installation manual of the 8050/55 also mentions these PLC variables.

DRSTAFn DRSTASn

Status Action

The Drive is not ready. Do not apply Mains power to the

Power Supply.

Check the 24 Vdc, and/or solve the

errors.

The Drive is ready to receive Power at the Bus. The

Drive_OK contact is closed.

Apply Mains power to the Power

Supply.

1 0 The Drive is ready to attend to the control signals.

Enable the Drive with Drive_Enable

and Speed_Enable.

The Drive_Enable and Speed_Enable functions activated.

The motor follows the command.

Govern the motor with the command.