Rockwell Automation Allen-Bradley 35E, User Manual

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Rockwell Automation Publication 35-UM001A-EN-P - May 2022 133
Chapter 6 Safety Functions
For the Armor PowerFlex drives, the pulse width (X) is typically 500 μs; the
pulse period (Y) is typically 300 ms.
Safety Output Data
The safety output data can be monitored through:
• Safety input assembly
• Message Instruction
The following Safety Output data is available:
• Safety output status
• Safety output ready
• Output monitor value
Each safety output point reports its own status, monitor value, and ready
attributes.
Safety Output Status
The safety output status indicates whether an alarm is present in the safety
output point. The safety output status is provided in the safety input assembly,
as shown in
Table 48 . Table 49 describes the attributes for reading the safety
status via CIP messaging.
Table 50 - Safety Output Specifications
IMPORTANT To help prevent the test pulse from causing the connected
device to malfunction, pay careful attention to the input
response time of the output device.
Table 48 - Safety Input Assembly Tags for Safety Output Status
Safety Input Assembly Tag Name
(safety controller)
Type / [bit] Description
devicename
:SI.OutputStatus SINT
A collection of safety output status, safety output
monitor values, and test output status
devicename
:SI.Out00Status [2]
Status of Safety Output 0
0 = Alarm
1 = OK
devicename
:SI.Out01Status [3]
Status of Safety Output 1
0 = Alarm
1 = OK
Table 49 - MSG Configuration for Safety Output Status
Service Code 0x0E Get attribute single
Class 0x3B Safety Discrete Output Point Object
Instance i + 1 Where
i
is the number of the safety output
Data Type USINT
Attribute
0x5
5 (decimal)
Safety Status
0 = Alarm
1 = OK
Attribute Value
Output type Bipolar output
Output current 1 A
Test Pulse width
500
µ
s
Test Pulse period 300 ms