Siemens S7-400PLC Especificaciones Pagina 356

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Interface modules
6.4 Interface modules IM 460-3 (6ES7460-3AA01-0AB0) and IM 461-3 (6ES7461-3AA01-0AA0)
S7-400 Automation System Module Data
356 Reference Manual, Edition 09/2009, A5E00850736-06
Operator controls and indicators on the send IM
Table 6- 10 Operator controls and indicators on the send IM
LEDs Meaning
EXTF LED (red) Lights up in the event of an external fault. Line 1 or line 2 is faulty (terminator
missing or broken cable)
C1 LED (green) Line 1 (via front connector x1, connection 1) is correct.
C1 LED (flashing
green)
An EU in the line is not ready for operation because
The power supply module is not switched on or
A module has not yet completed the initialization process
C2 LED (green) Line 2 (via front connector x2, connection 2) is correct.
C2 LED (flashing
green)
An EU in the line is not ready for operation because
The power supply module is not switched on or
A module has not yet completed the initialization process
Operator controls and indicators of the receive IM
Table 6- 11 Operator controls and indicators of the receive IM
LEDs Meaning
INTF LED (red) Lights up if a rack number > 21 or = 0 was set.
Lights up if you have changed the rack number under voltage.
EXTF LED (red) Lights up in the event of an external fault (line fault, for example, if the
terminator is not inserted or if a module has not yet completed the
initialization process, or if the CC is switched off)
DIP switch DIP switch to set the number of the mounting rack.
Front connector x1 Upper connector (input) for the cable from the previous interface module.
Front connector x2 Lower connector (output) for the cable to the next interface module or for the
terminator.
Parameter assignment
Using the DIP switch on the front panel of the module, you must set the number of the
mounting rack in which the receive IM is installed. The permitted range is 1 to 21.
If required, you can change the distance setting for the line on the programming device using
STEP 7.
The default setting for the distance is 100 m.
Ensure that the distance corresponds as closely as possible to the current length (the sum of
all the cables per line) as this will accelerate data transmission.
Note
The distance set must always be longer than the actual length of cable per line.
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