Glossary
S7-300 Programmable Controller Hardware and Installation
A5E00105492-01
Index-5
Priority class........................................12-11
Process Image....................................12-11
Process Interrupt.................................12-11
Product version...................................12-11
PROFIBUS address
Recommendation.............................4-32
PROFIBUS and MPI subnet .................4-43
PROFIBUS bus cable...........................4-34
PROFIBUS cables
Properties.........................................4-34
PROFIBUS subnet
Example...........................................4-42
PROFIBUS Terminator.........................4-45
PROFIBUS-DP ...................................12-11
commissioning.................................8-24
Direct data exchange.......................8-34
maximum baud rate.........................4-30
maximum possible number
of nodes......................................4-30
PROFIBUS-DP address
default ..............................................4-31
highest .............................................4-31
Rules................................................4-31
PROFIBUS-DP interface ......................4-33
PROFIBUS-DP Subnet.........................4-28
PROFIBUS-Subnet
cable lengths....................................4-38
Profile rail
connecting the protective conductor..6-4
ground conductor...............................5-4
mounting ............................................5-6
mounting hole dimensions.................5-5
preparing............................................5-4
Profile rails
fixing screws ......................................5-6
length .................................................4-4
versions..............................................5-3
Protect digital output modules from
inductive surge...............................11-28
Protective conductor
connecting to the rail..........................6-4
Protective ground
measures.........................................4-21
Protective measures
for complete plants ..........................4-14
PtP interface .........................................4-33
Purpose of the Manual............................1-1
R
Rechargeable battery
handling rules ..................................9-10
inserting .............................................8-6
replacing ............................................9-8
Reduction factor ..................................12-12
Reference potential
grounded ..........................................4-15
ungrounded......................................4-16
Repeater
RS 485 .............................................4-36
Replacing
backup battery....................................9-8
fuses.................................................9-12
module................................................9-5
rechargeable battery ..........................9-8
Replacing fuses
Digital output module .......................9-12
Reset
with keyswitch ..................................8-15
Reset CPU memory ..............................8-13
Restart.................................................12-12
Retentivity............................................12-12
Routing ..................................................4-44
Routing a potential difference cable....11-13
RS 485
bus connector...................................4-36
RS 485-Repeater ..................................4-36
Rules and regulations for error-free
operation ..........................................11-1
RUN
LED ..................................................10-7
Runtime error ......................................12-12
S
S7-300
initial power on .................................8-13
Scope of the Manual ...............................1-1
Segment ................................................4-30
in the MPI subnet .............................4-38
in the PROFIBUS subnet .................4-38
Service.....................................................1-5
SF
LED ..................................................10-7
LED, evaluation................................10-9
Shared data.........................................12-13
Shielding contact element .....................6-13
mounting...........................................6-13
Shielding terminal
laying cables.....................................6-14
Shielding terminal module.......................4-4
Signal module......................................12-13
SIMATIC Customer Support Hotline .......1-4
SIMATIC manager.................................8-19
start ..................................................8-19
SINEC L2-DP ......................................12-11
Single-step mode ..................................10-1
Slave diagnostics
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