Parameterising SSI interface
Input data assignment via index
12
Parameter setting via system bus (CAN) / CANopen
12.5
12.5.2
L
12.5−4
EDSPM−TXXX−9.0−11/2009
l
Use the modes "SSI mapping standard 1" (I4104
h
= 1) and "SSI mapping
standard 2" (I4104
h
= 2) to parameterise the input data of the modules
(subindex 1 ... 8) under index I4101
h
:
Index
I4101
h
Subindex 1
000000
hhh
Byte 0Byte 1Byte 2Byte 3
BitBitBit
000111222333444555666777
epm_t210
Fig. 12.5−4 Mapping of the input data under I4101
h
, subindex 1 (module 1)
Byte
Assignment
0 Reserved
1 Comparison value (LOW byte) Bits 0 ... 7
Selection of comparison value
2 Comparison value (MID byte) Bits 0 ... 7
3 Comparison value (HIGH byte) Bits 0 ... 7
l The switching conditions for module I/O.0 and I/O.1 are defined under index
I4103
h
(subindex 1 ... 9):
Index
I4103
h
Subindex 1
00
h
Byte 0
Bit
01234567
epm_t211
Fig. 12.5−5 Mapping of the control byte under I4103
h
, subindex 1 (module 1)
Byte
Assignment
0 Control Bits 0 ... 1
Setpoint selection
00: No setpoint selection
01: Setpoint selection for output I/O.0
10: Setpoint selection for output I/O.1
11: Setpoint selection for outputs I/O.0 and I/O.1
Bit 2 Reserved
Bit 3
Condition for setting the output = HIGH
0: If SSI encoder value is higher than setpoint
1: If SSI encoder value is lower than setpoint
Bits 4 ... 7 Reserved
SSI mapping standard 1 and
SSI mapping standard 2