Special memory (SM) and system symbol names
D.15 SMB66-SMB85 (PTO0/PWM0, PTO1/PWM1), SMB166-SMB169 (PTO0), SMB176-SMB179 (PTO1), and
SMB566-SMB579 (PTO2/PWM2): high-speed outputs
S7-200 SMART
818 System Manual, V2.3, 07/2017, A5E03822230-AF
Table D- 17 High-speed output 2 configuration and control
PLS2_Abort_AE SM566.4 PTO2 profile was aborted due to an add error: FALSE: No abort;
PLS2_Disable_UC SM566.5 PTO2 user manually disabled a PTO profile while it was running: FALSE:
Not disabled; TRUE: Manually disabled
PLS2_Ovr SM566.6 PTO2 pipeline overflow/underflow, loading pipeline while full or transfer-
ring an empty pipeline: FALSE: No overflow; TRUE: Pipeline over-
PTO2 idle: FALSE: PTO in progress; TRUE: PTO is idle
Monitor and control PTO2 (Pulse Train Output) and PWM2 (Pulse Width
Modulation) for Q0.3
PLS2_Cycle_Update SM567.0 PTO2/PWM2 update the cycle time or frequency value: FALSE: No up-
date; TRUE: Write new cycle time/frequency
PWM2_PW_Update SM567.1 PWM2 update the pulse width value: FALSE: No update; TRUE: Write
PTO2_PC_Update SM567.2 PTO2 update the pulse count value: FALSE: No update; TRUE: Write
PWM2 time base: FALSE: 1 μs/tick, TRUE: 1 ms/tick
PTO2_Operation SM567.5 PTO2 select single/multiple segment operation: FALSE: Single; TRUE:
PTO2/PWM2 mode select: FALSE: PWM; TRUE: PTO
PTO2/PWM2 enable: FALSE: disable; TRUE: enable
Word data type: PWM2 cycle time value (2 to 65,535 units of time base);
PTO2 frequency value (1 to 65,535 Hz)
Word data type: PWM2 pulse width value (0 to 65,535 units of time base)
Double Word data type: PTO2 pulse count value (1 to 2,147,483,647)
Byte data type: The currently executing segment number for PTO2's
profile
Word data type: Starting location of PTO2's profile table (byte offset from
V0)
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