status. The following table shows the meaning of the various combinations of colors for the
RUN/STOP, ERROR and MAINT LEDs.Each port has a LINK RX/TX LED. The table below shows the various "LED scenarios" of
ports for the CPU 1511T-1 PN.
Table 4- 2 Meaning of the LEDs
LINK TX/RX LED Meaning
LED off
There is no Ethernet connection between the PROFINET interface of the PROFINET device
and the communication partner.
No data is currently being sent/received via the PROFINET interface.
There is no LINK connection.
LED flashes green
The "LED flashing test" is being performed.
LED lit green
There is an Ethernet connection between the PROFINET interface of your PROFINET device
and a communication partner.
LED flickers yellow
Data is currently being received from or sent to a communications partner on Ethernet via
the PROFINET interface of the PROFINET deviceRetentive data area (incl. timers, counters,
flags), max.
128 kbyte; In total; available retentive memory for
bit memories, timers, counters, DBs, and technology
data (axes): 88 KB
Extended retentive data area (incl. timers,
counters, flags), max.
1 Mbyte; When using PS 60W 24/48/60V DC HF
Flag
• Number, max. 16 kbyte
• Number of clock memories 8; 8 clock memory bits, grouped into one clock
memory byte
Data blocks
• Retentivity adjustable Yes
• Retentivity preset No
Local data
• per priority class, max. 64 kbyte; max. 16 KB per block
Address area
Number of IO modules 1 024; max. number of modules / submodules
• Inputs 32 kbyte; All inputs are in the process image
• Outputs 32 kbyte; All outputs are in the process image
per integrated IO subsystem
– Inputs (volume) 8 kbyte
– Outputs (volume) 8 kbyte
per CM/CP
– Inputs (volume) 8 kbyte
– Outputs (volume) 8 kbyte
Subprocess images
• Number of subprocess images, max. 32
Hardware configuration
Number of distributed IO systems 32; A distributed I/O system is characterized not
only by the integration of distributed I/O via
PROFINET or PROFIBUS communication
modules, but also by the connection of I/O via
AS-i master modules or links (e.g. IE/PB-Link

Number of DP masters
• Via CM 4; A maximum of 4 CMs/CPs (PROFIBUS,
PROFINET, Ethernet) can be inserted in total
Number of IO Controllers
• integrated 1
• Via CM 4; A maximum of 4 CMs/CPs (PROFIBUS,
PROFINET, Ethernet) can be inserted in total
Rack
• Modules per rack, max. 32; CPU + 31 modules
• Number of lines, max. 1
PtP CM
• Number of PtP CMs the number of connectable PtP CMs is only
limited by the number of available slots
Time of day
Clock
• Type Hardware clock
• Backup time 6 wk; At 40 °C ambient temperature, typically
• Deviation per day, max. 10 s; Typ.: 2 sNumber of ports 2
• integrated switch Yes
• RJ 45 (Ethernet) Yes; X1
Functionality
• IP protocol Yes; IPv4
• PROFINET IO Controller Yes
• PROFINET IO Device Yes
• SIMATIC communication Yes
• Open IE communication Yes
• Web server Yes
• Media redundancy Yes; MRP Automanager according to
IEC 62439-2 Edition 2.0Yes; As MRP redundancy manager and/or MRP
client; max. number of devices in the ring: 50
– MRPD Yes; Requirement: IRT
– PROFIenergy Yes
– Prioritized startup Yes; Max. 32 PROFINET devices
– Number of connectable IO Devices,
max.
128; In total, up to 256 distributed I/O devices can
be connected via AS-i, PROFIBUS or PROFINET
– Of which IO devices with IRT, max. 64
– Number of connectable IO Devices for
RT, max.
128of which in line, max. 128
– Number of IO Devices that can be simultaneously
activated/deactivated, max.
8; in total across all interfaces
– Number of IO Devices per tool, max. 8
– Updating times The minimum value of the update time also
depends on communication share set for
PROFINET IO, on the number of IO devices, and
on the quantity of configured user data
Update time for IRT
– for send cycle of 250 µs 250 μs to 4 ms; Note: In the case of IRT with
isochronous mode, the minimum update time of
625 µs of the isochronous OB is decisive
– for send cycle of 500 µs 500 μs to 8 ms; Note: In the case of IRT with
isochronous mode, the minimum update time of
625 µs of the isochronous OB is decisive
– for send cycle of 1 ms 1 ms to 16 ms
– for send cycle of 2 ms 2 ms to 32 ms