
5-15
Installing Remote Base Controllers—RBCs
SIMATIC 545/555/575 System Manual
Jumper E2
Jumper E3
Header E4
Dipswitch
Freeze
Outputs off
(default)
Jumper E1 for
setting output state
(Off/Freeze)
RESET pushbutton
(recessed)
Figure 5-9 RBC Jumper Locations
Notice, in Table 5-5, that the Freeze option on the RBC overrides the Zero
selection on the analog/word output module; likewise, when Hold Last Value
is selected on the analog/word output module, that selection overrides the
Off option on the RBC jumper.
NOTE: If the RBC hardware watchdog timer is activated (an RBC failure),
the state of the outputs is determined by the output module, with no
reference to the RBC’s E1 (Off/Freeze) jumper. Discrete outputs go off (to a
value of zero). Analog/word outputs obey their own Zero/Hold Last Value
selection. If no Zero/Hold Last Value selection is available on the module,
the analog/word outputs hold their last value.
The jumpers on headers E2 and E3 are for factory use only. Header E4 is
shipped without a jumper. Do not alter the default settings unless
instructed to do so by a Siemens Technical Support technician.
Jumpers E2, E3 and
E4
Comentarios a estos manuales