Structure of the cyclic process data – IO Assembly
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7.5 Instance 122, Safety Input
The safety-related preset adjustment function is controlled via Instance 122, Members 1 to 2, and the
associated preset value is transferred to the measuring system.
Structure of the output words 0 to 2, Originator -> Measuring system
OW 0 OW 1 OW 2
TR Safety – Controlword TR Safety – Presetout
Link path, Packed EPATH with 8-bit class
Class #4
Instance #7A
Logical Type =
Attribute ID
Attribute ID #3
7.5.1 Output TR Safety – Controlword
The safety-related preset adjustment function is triggered and a new position value is sent to Instance
121, Member TR Safety – Position via Members TR Safety – Controlword
Output word OW 0, UINT
Bit Description
0
This bit serves to prepare the preset adjustment function. The actual preset function can
only be set using the Preset Request control bit if this bit is set. This function can only
be executed when the corresponding sequence is exactly followed;
see Chapter “TR Safety – Preset Adjustment Function“ on Page 74.
1
This bit serves to control the preset adjustment function. When this function is executed,
the measuring system is set to the position value set in Member TR Safety –
Presetout. This function can only be executed when the corresponding sequence is
exactly followed; see Chapter “TR Safety – Preset Adjustment Function“ on Page 74.
7.5.2 Output TR Safety – Presetout
The zero point of the measuring system can be adjusted to the mechanical zero point via the Member
TR Safety – Presetout. The desired preset value must be in the range of 0 to (measuring range
in steps – 1), otherwise the preset adjustment function will not be executed and Bit 3 Preset Error
in TR Safety – Status is set to = 1.
The preset value is set as a new position when the preset adjustment function is executed; see
chapter “TR Safety – Preset Adjustment Function” on Page 74.
Output words OW 1 to OW 2, UDINT
Byte
2 3 4 5
Bit
23-16 31-24 39-32 47-40
Data
2
– 2
2
– 2
2
– 2
2
– 2