4-6
Box PC 820 / PC FI45 V2, Manual
A5E00051531-03
4.4 Logical Organisation of Digital Inputs and Outputs
Due to the slave controller block used, the digital inputs DI 0.0 - 5.7 are defined as
a block (permanently preset as slave). This block consists of 32 direct keys (DI
0.0–0.7, DI 1.0–1.7, DI 4.0–4.7 and DI 5.0–5.7) of the SIMATIC PC membrane
keyboard and 16 digital inputs of the external connector (40-pin plug connector) at
the rear sheet metal terminal of the direct key module (DI 2.0–2.7 and DI 3.0–3.7)
The digital outputs (DO 0.0 –0.7 and DO 1.0–1.7) are also defined as a block and
can be connected to the external connector (40-pin plug connector).
4.5 Assignment of Direct Keys to Digital Inputs
Direct key no. Digital
input (DI)
SIMATIC PC )*
function keys
Direct key no. Digital
input (DI)
SIMATIC PC )*
function keys
Direct key 1 DI 0.0 F1 Direct key 17 DI 4.0 S1
Direct key 2 DI 0.1 F2 Direct key 18 DI 4.1 S2
Direct key 3 DI 0.2 F3 Direct key 19 DI 4.2 S3
Direct key 4 DI 0.3 F4 Direct key 20 DI 4.3 S4
Direct key 5 DI 0.4 F5 Direct key 21 DI 4.4 S5
Direct key 6 DI 0.5 F6 Direct key 22 DI 4.5 S6
Direct key 7 DI 0.6 F7 Direct key 23 DI 4.6 S7
Direct key 8 DI 0.7 F8 Direct key 24 DI 4.7 S8
Direct key 9 DI 1.0 F9 Direct key 25 DI 5.0 S9
Direct key 10 DI 1.1 F10 Direct key 26 DI 5.1 S10
Direct key 11 DI 1.2 F11 Direct key 27 DI 5.2 S11
Direct key 12 DI 1.3 F12 Direct key 28 DI 5.3 S12
Direct key 13 DI 1.4 F13 Direct key 29 DI 5.4 S13
Direct key 14 DI 1.5 F14 Direct key 30 DI 5.5 S14
Direct key 15 DI 1.6 F15 Direct key 31 DI 5.6 S15
Direct key 16 DI 1.7 F16 Direct key 32 DI 5.7 S16
)* factory presetting
The direct key number is determined by the parameter assignment of the keyboard
controller (see chapter ‘Keyboard Controller’) and can be modified at any time. All
settings are stored in the keyboard controller and are saved even after
disconnecting your PC from the power supply.
Direct Key Module (Optional with FI45)
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