S7-200 Specifications
A-59
S7-200 Programmable Controller System Manual
A5E00066097-02
Table A-19 Special Memory Bytes SMB200 to SMB299
DP is First
Intelligent
Module
DP is Second
Intelligent
Module
Description
SMB200 to
SMB215
SMB250 to
SMB265
Module name (16 ASCII characters)
“EM277 ProfibusDP”
SMB216 to
SMB219
SMB266 to
SMB269
S/W revision number (4 ASCII characters)
xxxx
SMW220 SMW270 Error code
16#0000 No error
16#0001 No user power
16#0002 to 16#FFFF Reserved
SMB222 SMB272 DP slave module’s station address as set by address switches (0 - 99
decimal)
SMB223 SMB273 Reserved
SMB224 SMB274 DP standard protocol status byte
S1 S0 DP Standard status byte description
0 0 DP communication not initiated since power on
0 1 Configuration/parameterization error detected
1 0 Currently in data exchange mode
1 1 Dropped out of data exchange mode
S0
00000
MSB LSB
0S1
SMB225 SMB275 DP standard protocol - address of the slave’s master (0 to 126)
SMW226 SMW276 DP standard protocol - V memory address of the output buffer as an
offset from VB0.
SMB228 SMB278 DP standard protocol - number of bytes of output data
SMB229 SMB279 DP standard protocol - number of bytes of input data
SMB230 to
SMB249
SMB280 to
SMB299
Reserved - cleared on power up
Note: SMB225 to SMB229, and SMB275 to SMB279 are updated each time the DP slave module accepts configuration/
parameterization information. These locations are updated even if a configuration/parameterization error is detected.
The locations are cleared on each power up.
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