Special Memory (SM) Bits
C-16
S7-200 Programmable Controller System Manual
A5E00066097-02
Table C-18 Special Memory Bytes SMB130 to SMB165 (continued)
SM Byte Description
SMB158 to
SMB161
HSC5 new current value: SM158 is most significant byte and SM161 is
least significant byte
SMB162 to
SMB165
HSC5 new preset value: SM162 is most significant byte and SM165 is least
significant byte
SMB166 to SMB194: PTO0, PTO1 Profile Definition Table
As described in Table C-19, SMB166 through SMB194 are used to show the
number of active profile steps and the address of the profile table in V memory.
Table C-19 Special Memory Bytes SMB166 to SMB194
SM Byte
Description
SMB166 Current entry number of the active profile step for PTO0
SMB167 Reserved
SMB168
SMB169
V memory address of the profile table for PTO0 given as an offset from V0.
SM168 is the most significant byte of the address offset
SMB170 to
SMB175
Reserved
SMB176 Current entry number of the active profile step for PTO1
SMB177 Reserved
SMB178 to
SMB179
V memory address of the profile table for PTO1 given as an offset from V0.
SM178 is the most significant byte of the address offset
SMB180 to
SMB194
Reserved
SMB200 to SMB299: Intelligent Module Status
SMB200 through SMB299 are reserved for status information provided by
intelligent expansion modules, such as the EM 277 PROFIBUS-DP module.
SMB200 through SMB249 are reserved for the first intelligent expansion module in
your system (the one closest to your CPU); SMB250 through SMB299 are
reserved for the second intelligent module. Refer to your module’s specifications in
Appendix A to see how your module uses SMB200 through SMB299.
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