Siemens S5-155U System Manual page 477

9.7.3
Special Features of the 470
Analog Output Module
BASP (output inhibit)
Function block
9.7.4
Setting the Module Address You set the module address on the addressing switch. This also
Labelling field
System Manual
C79000-B8576-C109-03
The BASP signal is not interpreted by the 470 analog output module.
Once output, a value is retained.
You can output analog values to the process via analog output
modules with a function block from the "basic functions" package.
establishes the necessary assignments between user program and
process connection. The module address is the sum of the decimal
significances of the switch rockers in the On setting (• • ).
One data word = two data bytes is required to process an input or an
output. A module with 8 inputs or outputs reserves 16 byte addresses.
You can affix the adhesive label with the desired module address on a
free labelling field under the addressing switch.
The switch rockers to be set for the module address specified as a
decimal number (address bit ADB) are marked by dots on the label.
Press the individual rockers of the addressing switch downwards with
a ballpoint pen or similar object, but not a pencil.
On Setting
(Switch Pressed)
Address (Decimal)
ADB0 and ADB1 are not assigned
ADB2 is not connected
Figure 9-36 Labelling of the Addressing Switch
The address under which the module is referenced by the STEP 5
program is independent of the slot.
The 470 Analog Output Module
Addressing Switch
Free Field for Label
with Module Address
and marked Switch
Settings
Decimal Significance
of the Address Bit
Address Bit
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