10.5. Safe digital I/O - Safe power supply (outputs)
For an SI unit configuration using Safety Mode (Channel Passivation), it occupies 5 bytes of Output data as
shown below.
Table 10-5 Byte 0 Safe power supply for Safety Mode (Channel Passivation) (outputs)
Bit
0
Safe power supply of US2 to the IO modules
1
Safe power supply of US2 to the valve zone 1
2
Safe power supply of US2 to the valve zone 2
3
Safe power supply of US2 to the valve zone 3
4...7
Reserved
Note: The safe power supply supplies the power also directly to the first valve for pilot air of the respective valve zone. Refer to Section
6 Valve manifold.
Byte 1-4: Reserved for PROFIsafe communication container specified by PROFIsafe.
10.6. Safe parameter values
For an SI unit configuration using Safety Mode (Module Passivation/xxx), it occupies 12 bytes of Output data,
8 of which are user settable. The parametrization values can be written as either Word data type or Bit data
type, where the choice is determined by the module type residing in slot 1 of the EX245-FPS hardware
configuration e.g.
Slot 1 contains 'Safety Mode (Module Passivation/Word)': use Word data type
or
Slot 1 contains 'Safety Mode (Module Passivation/Bit)': use Bit data type
Note: Safety Mode (Module Passivation/xxx) can refer to either type
Note: To disable an 'Output feedback' (bytes 1, 2 or 3) or a 'Safe input' (bytes 4, 5, 6 or 7) simply write a value of 0x00 to the
corresponding parameter byte. However, when all 'Output feedbacks' and 'Safe Inputs' are disabled at least one bit in the
parametrization bytes 1 - 7 must be set to logic '1' e.g. Byte 1: 0x01, Bytes 2 -7: 0x00
Hardware reset can be performed by downloading a project to the PLC using the configuration software and resetting the power
supply of the SI unit.
Table 10-6 Overview for Safety Mode (Module Passivation/xxx)
Byte
0
Safe power supply of US2 to the I/O module and the valve zone1-3
1
Output feedback parameter for zone M
2
Output feedback parameter zone 1
3
Output feedback parameter zone 2 and zone 3
4*
Safe input parameter for Ch.0 and Ch.4 (input connector 0)
5*
Safe input parameter for Ch.1 and Ch.5 (input connector 1)
6*
Safe input parameter for Ch.2 and Ch.6 (input connector 2)
7*
Safe input parameter for Ch.3 and Ch.7 (input connector 3)
8-11
Reserved for PROFIsafe communication protocol
* When slot 1 is occupied by module Safety Mode (Module Passivation/Word), the following byte pairs must be written as
a single word: bytes 4 & 5 as a Word, bytes 6 & 7 as a Word
Description
Description
- 54 -
Explanation
0: OFF, 1: ON
0: OFF, 1: ON
0: OFF, 1: ON
0: OFF, 1: ON
Fixed 0
Data type
for Bits
Unsigned8
Unsigned8
Unsigned8
Unsigned8
Unsigned8
Unsigned8
Unsigned8
Unsigned8
Unsigned8
Integer16
Unsigned8
Unsigned8
Integer16
Unsigned8
-
-
No.EX##-OMY0004
Data type
for Word
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