Configuration: Siemens S7 Controller BK3120

Parameter data for the BK3120

Settings

Configuration of the BK3120 module with digital inputs/outputs only

Sample 1:
1 x BK3120
10 x KL1xx4
1 x KL9100 (is not entered, as this Bus Terminal is entirely passive)
11 x KL2xx4
1 x KL9010 (is not entered, as this Bus Terminal is entirely passive)
The sum total of digital bytes must be added together and entered.
Digital inputs
10 x KL1xx4, i.e. 10 x 4 bits = 40 bits
40 bit / 8 = 5 bytes, i.e. enter  5 x 8 bit or 1 x 40 bit or 1 x 8 bit + 1 x 32 bit, etc. (see Fig. Example for entering individual bytes and Fig. Example for entering contiguous bytes)

Digital outputs
11 x KL2xx4, i.e. 10 x 4 bit = 44 bit
44 bit  / 8 = 5.5 bytes, rounded up to 6 bytes, i.e. enter  6 x 8 bit or 1 x 48 bit or 1 x 8 bit + 1 x 40 bit etc. (see Fig. Example for entering individual bytes and Fig. Example for entering contiguous bytes)

Maximum config data Each individual byte requires one byte of ConfigData. In the BK3120 a maximum of 64 bytes of configuration data is available.

Configuration of the BK3120 module with complex and digital input/outputs

Byte-oriented modules are the first to be mapped into the process image, and for this reason all the complex modules must first be entered in the sequence in which they are plugged into the Bus Coupler. For some byte-oriented Bus Terminals, it is possible to distinguish between compact and complex mapping.
Compact - only user data
Complex - user data plus status (for extended diagnosis) and control (for register communication)

Finally the digital signals are entered and rounded up to a whole byte.

Example 2.a:
1 x BK3120
2 x KL1012
1 x KL2022
1 x KL3312 compact mapping
1 x KL9010

Example 2.b:
1 x BK3120
2 x KL1012
1 x KL2022
1 x KL3312 complex mapping
1 x KL9010