Smb66-Smb85 (Pto0/Pwm0, Pto1/Pwm1), Smb166-Smb169 (Pto0), Smb176-Smb179 (Pto1), And Smb566-Smb579 (Pto2/Pwm2): High-Speed Outputs - Siemens SIMATIC S7 System Manual

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
D.15 SMB66-SMB85 (PTO0/PWM0, PTO1/PWM1), SMB166-SMB169
(PTO0), SMB176-SMB179 (PTO1), and SMB566-SMB579
(PTO2/PWM2): high-speed outputs
The S7-200 SMART CPU uses the following special memory to monitor and control the
pulse train outputs (PTO0 and PTO1) and pulse width modulation outputs (PWM0 and
PWM1) for the PLS (Pulse) instruction:
● SMB66-SMB85
● SMB166-SMB169
● SMB176-SMB179
The CPU uses SMB566-SMB579 to monitor and control pulse train output PTO2 and pulse
width modulation output PWM2.
Table D- 15 High-speed output 0 configuration and control
S7-200 SMART
symbol name
PTO0_Status
PLS0_Abort_AE
PLS0_Disable_UC
PLS0_Ovr
PLS0_Idle
PLS0_Ctrl
PLS0_Cycle_Update
PWM0_PW_Update
PTO0_PC_Update
PWM0_TimeBase
PTO0_Operation
PLS0_Select
PLS0_Enable
PLS0_Cycle
PWM0_PW
PTO0_PC
816
SM address Function
SMB66 PTO0 Status
SM66.4 PTO0 profile was aborted due to an add error: FALSE: No abort; TRUE:
aborted
SM66.5 PTO0 user manually disabled a PTO profile while it was running: FALSE:
Not disabled; TRUE: Manually disabled
SM66.6 PTO0 pipeline overflow/underflow, loading pipeline while full or transfer-
ring an empty pipeline: FALSE: No overflow; TRUE: Pipeline over-
flow/underflow
SM66.7 PTO0 idle: FALSE: PTO in progress; TRUE: PTO is idle
SMB67 Monitor and control PTO0 (Pulse Train Output) and PWM0 (Pulse Width
Modulation) for Q0.0
SM67.0 PTO0/PWM0 update the cycle time or frequency value: FALSE: No up-
date; TRUE: Write new cycle time/frequency
SM67.1 PWM0 update the pulse width value: FALSE: No update; TRUE: Write
new pulse width
SM67.2 PTO0 update the pulse count value: FALSE: No update; TRUE: Write
new pulse count
SM67.3 PWM0 time base: FALSE: 1 μs/tick, TRUE: 1 ms/tick
SM67.4 Reserved
SM67.5 PTO0 select single/multiple segment operation: FALSE: Single;
TRUE:Multiple
SM67.6 PTO0/PWM0 mode select: FALSE: PWM; TRUE: PTO
SM67.7 PTO0/PWM0 enable: FALSE: Disable; TRUE: Enable
SMW68 Word data type: PWM0 cycle time value (2 to 65,535 units of time base);
PTO0 frequency value (1 to 65,535 Hz)
SMW70 Word data type: PWM0 pulse width value (0 to 65,535 units of time base)
SMD72 Double Word data type: PTO0 pulse count value (1 to 2,147,483,647)
System Manual, V2.3, 07/2017, A5E03822230-AF
S7-200 SMART