Specifications

SIMATIC Instructions
9-57
S7-200 Programmable Controller System Manual
C79000-G7076-C233-01
Table 9-17 PTO /PWM Control Registers
Q0.0
Q0.1 Status Byte
SM66.4 SM76.4 PTO profile aborted due to delta calculation error
0 = no error; 1 = aborted
SM66.5 SM76.5 PTO profile aborted due to user command
0 = no abort; 1 = aborted
SM66.6 SM76.6 PTO pipeline overflow/underflow
0 = no overflow; 1 = overflow/underflow
SM66.7 SM76.7 PTO idle 0 = in progress; 1 = PTO idle
Q0.0 Q0.1 Control Byte
SM67.0 SM77.0 PTO/PWM update cycle time value 0 = no update; 1 = update cycle time
SM67.1 SM77.1 PWM update pulse width time value 0 = no update; 1 = update pulse width
SM67.2 SM77.2 PTO update pulse count value 0 = no update; 1 = update pulse count
SM67.3 SM77.3 PTO/PWM time base select 0 = 1 µs/tick; 1 = 1ms/tick
SM67.4 SM77.4 PWM update method:
0 = asynchronous update, 1 = synchronous update
SM67.5 SM77.5 PTO operation: 0 = single segment operation 1 = multiple segment operation
SM67.6 SM77.6 PTO/PWM mode select 0 = selects PTO; 1 = selects PWM
SM67.7 SM77.7 PTO/PWM enable 0 = disables PTO/PWM;
1 = enables PTO/PWM
Q0.0 Q0.1 Other PTO/PWM Registers
SMW68 SMW78 PTO/PWM cycle time value (range: 2 to 65535)
SMW70 SMW80 PWM pulse width value (range: 0 to 65535)
SMD72 SMD82 PTO pulse count value (range: 1 to 4294967295)
SMB166 SMB176 Number of segment in progress (used only in multiple segment PTO operation)
SMW168 SMW178 Starting location of profile table, expressed as a byte offset from V0 (used only in
multiple segment PTO operation)