Siemens S7-400 ユーザーズマニュアル

13-46

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

You must connect the ground terminal (M and S

0/

S

1

) of the analog input/output

module with the ground terminal of the load power supply. Use a cable with a
cross-section of 1 mm

2

 for this purpose.

You must short-circuit unswitched input channels. This achieves optimal noise
immunity for the analog module.

Leave unswitched output channels open.

The IF 961-AIO interface submodule is addressed with the M7-300/400-reserved
I/O address area (starting from C000

H

).

The base address depends on the interface submodule slot in the expansion
module or the programmable module. See the descriptions “M7-300 Expansions”,
“M7-400 Expansions” or the description of the M7-400 programmable modules for
the slot-dependent base address of the interface submodule.

The I/O address is the sum of the base address and the offset address.

The registers and their meanings and the offset addresses are described below.

Table 13-39

Offset Address Assignments for the IF 961-AIO Interface Submodule

00

H

ADC data channel 0 (2

0

 - 2

15

)

ADC data channel 0 (2

0

 - 2

15

)

02

H

ADC data channel 1 (2

0

 - 2

15

)

ADC data channel 1 (2

0

 - 2

15

)

04

H

ADC data channel 2 (2

0

 - 2

15

)

Reserved

06

H

ADC data channel 3 (2

0

 - 2

15

)

Reserved

08

H

Indication of settings such as automatic
conversion, cycle time, interrupt enable

Setting of automatic conversion, 
cycle time and interrupt enable

0A

H

Indication of channel number

Output of channel number

0C

H

Indication of end of conversion (EOC)
and voltage fault

Start of analog-digital conversion

0E

H

Reserved

Interrupt acknowledgment