Siemens M7-400 ユーザーズマニュアル

5-46

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

The necessary connecting cables, which result from the potential connection of the
analog input module and the sensors, are not drawn in the figures shown below.

In other words, you must continue to take note of and implement Section 5.8 with
its generally applicable information on connecting sensors.

The abbreviations and mnemonics used in the figure below have the following
meanings:

M +:

Measuring line (positive)

M –:

Measuring line (negative)

M

ANA

:

Reference potential of the analog measuring circuit

+

–

U

+

–

U

M+
M–
M+

M

ANA*

M–

* Connection required in the case of modules with M

ANA

Figure 5-9

Connecting Voltage Sensors to an AI