Siemens Simatic S7-200 System Manual page 227

Table 10-10
Q0.0 Q0.1
SM66.6 SM76.6 PTO pipeline overflow
SM66.7 SM76.7 PTO idle
Q0.0 Q0.1
SM67.0 SM77.0 PTO/PWM update cycle time value
SM67.1 SM77.1 PWM update pulse width time value
SM67.2 SM77.2 PTO update pulse count value
SM67.3 SM77.3 PTO/PWM time base select
SM67.4 SM77.4 Not used
SM67.5 SM77.5 Not used
SM67.6 SM77.6 PTO/PWM mode select
SM67.7 SM77.7 PTO/PWM enable
Q0.0 Q0.1
SM68 SM78
SM69 SM79
Q0.0 Q0.1
SM70 SM80
SM71 SM81
Q0.0 Q0.1
SM72 SM82
SM73 SM83
SM74 SM84
SM75 SM85
S7-200 Programmable Controller System Manual
C79000-G7076-C230-02
PTO/PWM Locations for Piping Two Pulse Outputs
Status Bit for Pulse Outputs
Control Bits for PTO/PWM Outputs
Cycle Time Values for PTO/PWM Outputs (Range: 2 to 65,535)
Most significant byte of the PTO/PWM cycle time value
Least significant byte of the PTO/PWM cycle time value
Pulse Width Values for PWM Outputs (Range: 0 to 65,535)
Most significant byte of the PWM pulse width value
Least significant byte of the PWM pulse width value
Pulse Count Values for Pulse Outputs (Range: 1 to 4,294,967,295)
Most significant byte of the PTO pulse count value
Next-to-most significant byte of the PTO pulse count value
Next-to-least significant byte of the PTO pulse count value
Least significant byte of the PTO pulse count value
0 = no overflow; 1 = overflow
0 = in progress; 1 = PTO idle
0 = no update; 1 = update cycle time
0 = no update; 1 = update pulse width
0 = no update; 1 = update pulse count
0 = 1 µs/tick;
1 = 1ms/tick
0 = selects PTO; 1 = selects PWM
0 = disables PTO/PWM; 1 = enables PTO/PWM
Instruction Set
10-39