Commissioning The Sm 334; Ai 4/Ao 2 X 8/8 Bits - Siemens SIMATIC S7-300 Reference Manual
Programmable logic controllers module data
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Analog Modules
Commissioning the SM 334; AI 4/AO 2 x 8/8 bits
4.30.1
The analog/output module SM 334; AI 4/AO 2 x 8/8 bits is a non-isolated module.
You cannot program the SM 334; AI 4/AO 2 x 8/8 bits.
Important information on connecting the module
Note
Note when connecting the SM 334 that:
•
the analog chassis ground M
chassis ground M of the CPU and/or the interface module (IM). Use a wire
with a minimum cross-section of 1 mm
If there is no ground connection between M
off. Inputs are read with 7FFF
without a ground connection for some time, it may be destroyed.
•
the supply voltage for the CPU and/or the interface module (IM) must not
be connected with reversed polarity. Reverse polarity causes the
destruction of the module because M
potential (+24 V).
Addressing
The inputs and outputs of the module are addressed as of the initial module
address.
The address of a channel is obtained from the module start address and an
address offset.
Input Addresses
The following addresses apply to the inputs:
Chan-
nel
0
1
2
3
4-192
Initial module address
Module start address + 2 bytes address offset
Module start address + 4 bytes address offset
Module start address + 6 bytes address offset
(terminal 15 or 18) is connected to the
ANA
2
for this.
and M, the module switches
ANA
; outputs return a value of 0. If the module is run
H
is subjected to an unauthorized high
ANA
Address
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
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