Beckhoff EP5 Series, Документация, Страница: 70 / 154

Commissioning/Configuration
EP5xxx 70 Version: 2.3.0
• Index 0x8000:13 [
}
94] , Min. Inhibit time [µs]
See index 0x8000:03 [
}
94] .
SSI advanced settings
• Index 0x800D:01 [ } 95] , Encoder power supply on
Switches the 24 V supply voltage
• Index 0x800D:02 [ } 95] , Encoder direction pin on
Switches the 24 V supply at the Direction pin
• Index 0x800D:03 [ } 95] , Encoder reset pin on
Switches the 24 V supply at the Reset pin
The total size of the data depends on the encoder used. It is also type-specific whether a power-fail bit or
another auxiliary bit is supported. The counter value in the
Counter Value index 0x6000:11 [ } 94] is
determined based on the value entered in object SSI data length index 0x8000:12 [ } 94] .
A few example configurations are shown below:
Specification of the encoder CoE settings of the EP5001-0002
ST MT Error bit 0x8000:0F SSI-
frame type 0x8000:11 SSI-
frame size 0x8000:12 SSI-data
length 0x8000:02 Enable power failure
bit
13 0 0 1: Single-turn analy-
sis is active 13 13 0: Power failure bit is not active
12 12 1 0: Multi-turn analy-
sis is active 25 24 1: Power failure bit is active
12 12 0 2: Variable analysis
is active 24 24 0: Power failure bit is not active
12 13 0 2: Variable analysis
is active 25 25 0: Power failure bit is not active
16 16 0 2: Variable analysis
is active 32 32 0: Power failure bit is not active
16 0 0 2: Variable analysis
is active 16 16 0: Power failure bit is not active
13 16 1 2: Variable analysis
is active 30 29 1: Power failure bit is active
12 12 2 2: Variable analysis
is active 26* 26* 0: Power failure bit is not active
*) Analysis of the data and division into position and auxiliary bits must take place in the PLC.
If the encoder offers more than 1 auxiliary bit, this can be done by means of suitable configuration of the
objects 0x8000:11
SSI frame size and 0x80n0 SSI data length . The maximum size of 32 bits must be
considered here. If the parameters have the same size, the Counter Value index 0x6000:11 [
}
94] does not
only show the position, but also additional bits. Analysis of the data and division into position and auxiliary
bits must take place in the PLC.
If the settings are not made correctly in the CoE, or if there is an error at the inputs, this is indicated via the
status bits
Data Error
(Index
0x6000:01
[
}
94] )
Frame error
(Index
0x6000:02
[
}
94] )
Possible error type
TRUE FALSE SSI input error:
- SSI without power supply
- Broken wire at SSI data inputs D+ or D-
If no data communication takes place the SSI input of the terminal is on low level.
FALSE TRUE There is an incorrect data frame, the data frame was not concluded with zero, or possibly
- Wire breakage in the clock lines
- Incorrect parameterization in the CoE
TRUE TRUE - Broken wire at SSI data inputs D+ or D-
- Data cables interchanged
FALSE FALSE If bits are shifted in the counter value despite correct CoE parameterization, this may be to do with
the clock lines being swapped