Ons - One Shot - Allen-Bradley MicroLogix 1400 Instruction Manual

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OTL and OTU Instructions Valid Addressing Modes and File Types
For definitions of the terms used in this table see Using the Instruction Descriptions on page 92.
Parameter
Operand Bit • • • •
(1) PTOX and PWMX files are only for use with MicroLogix 1400 BXB or BXBA unit.
(2) See Important note about indirect addressing.

ONS - One Shot

N7:1
ONS
0
In the event of a power loss, any OTL controlled bit (including field devices)
ATTENTION
energizes with the return of power if the OTL bit was set when power was
lost.
Under error conditions, physical outputs are turned off. Once the error
ATTENTION
conditions are cleared, the controller resumes operation using the data
table value.
Addressing Modes and File Types can be used as shown in the following
table:
Data Files
• • • •
You cannot use indirect addressing with: S, MG, PD, RTC, HSC, PTOX,
IMPORTANT
PWMX, STI, EII, BHI, MMI, CS, IOS, LCD, and DLS files.
Instruction Type: input
Execution Time for the ONS Instructions
Controller When Rung Is:
True
MicroLogix 1400 0.2776 µs
(1)
Function Files
• • • • •
False
0.3110 µs
Publication 1766-RM001A-EN-P - October 2008
Relay-Type (Bit) Instructions 171
Address
Address Level
(2)
Mode
• • • •