Allen-Bradley MicroLogix 1200 - PTO - Pulse Train Output

1 Publication 1762-RM001C-EN-P
Chapter 6
Using High-Speed Outputs
The high-speed output instructions allow you to control and monitor the
PTO and PWM functions which control the physical high-speed outputs.
PTO - Pulse Train Output
Instruction Type: output
Instruction Used To: Page
PTO - Pulse Train Output Generate stepper pulses 6-2
PWM - Pulse Width Modulation Generate PWM output 6-18
PTO
Pulse Train Output
PTO Number 0
PTO
IMPORTANT
The PTO function can only be used with the controller’s
embedded I/O. It cannot be used with expansion I/O
modules.
IMPORTANT
The PTO instruction should only be used with MicroLogix
1200 and 1500 BXB units. Relay outputs are not capable of
performing very high-speed operations.
Table 6.1 Execution Time for the PTO Instruction
Controller When Rung Is:
True False
MicroLogix 1200 75.6
µ
s 24.4
µ
s
MicroLogix 1500 72.6
µ
s21.1
µ
s