Status And Error Indicators: Cpu 31Xc; Table 2-2 Differences Of The Cpus 31Xc - Siemens CPU 31 Series Technical Data Manual

Operating and display elements
2.1 Operating and display elements: CPU 31xC
Differences between the CPUs
Table 2-2
Element
9-pole DP
interface (X2)
15-pole PtP
interface (X2)
Digital inputs
Digital outputs
Analog inputs
Analog outputs
Technological
functions
2.1.2

Status and Error Indicators: CPU 31xC

LED designation
SF
BF (for CPUs with DP
interface only)
DC5 V
FRCE
RUN
STOP
Reference
• CPU operating modes:
• Information on CPU memory reset:
• Evaluation of the LEDs upon error or diagnostic event:
2-4
Differences of the CPUs 31xC
CPU
312C
–
–
10
6
–
–
2 counters 3 counters 3 counters
Color
red
red
green
yellow
green
yellow
Commissioning, Commissioning Modules, CPU Memory Reset by means of Mode
Selector Switch
and CPU 31x, Test Functions, Diagnostics and Troubleshooting, Diagnostics with the
help of Status and Error LEDs
CPU CPU
313C
313C-2 DP
– X
– –
24 16
16 16
4 + 1 –
2 –
Meaning
Hardware or software error
Bus error
5-V power for CPU and S7-300 bus is OK
Force job is active
CPU in RUN
The LED flashes during STARTUP at a rate of 2 Hz, and in HOLD
state at 0.5 Hz.
CPU in STOP and HOLD or STARTUP
The LED flashes at 0.5 Hz when the CPU requests a memory reset,
and during the reset at 2 Hz.
STEP 7 Online Help
.
Operating instructions CPU 31xC and CPU31x,
CPU CPU
313C-2 PtP 314C-2 DP
– X
X –
16 24
16 16
– 4 + 1
– 2
3 counters 4 counters
1 channel for
positioning
Operating Instructions CPU 31xC
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06
CPU
314C-2 PtP
–
X
24
16
4 + 1
2
4 counters
1 channel
for
positioning