Siemens SIMATIC S7-200 System Manual page 151

Table 6-36 SM Locations of the PTO / PWM Control Registers
Q0.0 Q0.1 Status Bits
SM66.4 SM76.4 PTO profile aborted (delta calculation error): 0 = no error
SM66.5 SM76.5 PTO profile aborted due to user command: 0 = no abort
SM66.6 SM76.6 PTO/PWM pipeline overflow/underflow:
SM66.7 SM76.7 PTO idle:
Q0.0 Q0.1 Control Bits
SM67.0 SM77.0 PTO/PWM update the cycle time:
SM67.1 SM77.1 PWM update the pulse width time:
SM67.2 SM77.2 PTO update the pulse count value:
SM67.3 SM77.3 PTO/PWM time base:
SM67.4 SM77.4 PWM update method:
SM67.5 SM77.5 PTO single/multiple segment operation:
SM67.6 SM77.6 PTO/PWM mode select:
SM67.7 SM77.7 PTO/PWM enable:
Q0.0 Q0.1 Other PTO/PWM Registers
SMW68 SMW78 PTO/PWM cycle time value
SMW70 SMW80 PWM pulse width value
SMD72 SMD82 PTO pulse count value
SMB166 SMB176 Number of the segment in progress
SMW168 SMW178 Starting location of the profile table
(byte offset from V0 )
SMB170 SMB180 Linear profile status byte
SMB171 SMB181 Linear profile result register
SMD172 SMD182 Manual mode frequency register
Table 6-37 PTO/PWM Control Byte Reference
Result of Executing the PLS Instruction
Control Control
Register
Select
(Hex
Enable
Mode
Value)
16#81 Yes PTO
16#84 Yes PTO
16#85 Yes PTO
16#89 Yes PTO
16#8C Yes PTO
16#8D Yes PTO
16#A0 Yes PTO
16#A8 Yes PTO
16#D1 Yes PWM
16#D2 Yes PWM
16#D3 Yes PWM
16#D9 Yes PWM
16#DA Yes PWM
16#DB Yes PWM
PTO PWM
Segment Update
Operation Method
Single
Single
Single
Single
Single
Single
Multiple
Multiple
Synchronous
Synchronous
Synchronous
Synchronous
Synchronous
Synchronous
S7-200 Instruction Set
1 = aborted
1 = aborted
0 = no overflow 1 = overflow/underflow
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
0 = 1 µs/tick 1 = 1 ms/tick
0 =asynchronous 1 = synchronous
0 = single 1 = multiple
0 = PTO 1 = PWM
0 = disable 1 = enable
range: 2 to 65,535
range: 0 to 65,535
range: 1 to 4,294,967,295
Multiple-segment PTO operation only
Multiple-segment PTO operation only
Pulse Pulse
Time Base
Count Width
1 µs/cycle
1 µs/cycle Load
1 µs/cycle Load
1 ms/cycle
1 ms/cycle Load
1 ms/cycle Load
1 µs/cycle
1 ms/cycle
1 µs/cycle
1 µs/cycle Load
1 µs/cycle Load
1 ms/cycle
1 ms/cycle Load
1 ms/cycle Load
Chapter 6
count
Cycle
Time
Load
Load
Load
Load
Load
Load
Load
Load
137