R7D-SV4-R datasheet(6/46 Pages) MSYSTEM

6 / 46 page

MODEL: R7C

R7C SPECIFICATIONS

ES-7801 Rev.26 Page 6/46

http://www.m-system.co.jp/

INDICATOR LED

PWR

OFF

■ STATUS INDICATOR LED

OFF = OFF, ON = ON, BL = Blinking

*1. SD LED may look not blinking but ON with high baud rate and fewer connected modules.

*2. LEDs indicated with “----” in STATUS rarely occurs in normal operation. (LED failure or the like as possible cause).

■ DISCRETE I/O STATUS INDICATOR LED

Discrete I/O modules, including those for extensions, have LED indicators showing I/O signal status.

Totalized pulse modules have LED indicators showing input signal status.

Contact ON : LED ON

Contact OFF : LED OFF

RUN

OFF

ERR

OFF

SD*

OFF

ON/OFF

OFF

STATUS*

Communicates normally with occasional CRC errors due to noise interference.

Communicates normally but the Baud Rate and/or Station Address switches failed.

ERR LED blinks approximately in 0.5 seconds intervals.

----

CRC error found in the received data. Unable to respond.

----

Normal communication

----

Unable to receive data addressed to the station.

----

Performs the interval-timed responses but CRC error found in receiving the refresh

data.

----

CRC error found in the data addressed to the station.

----

Link is not started.

----

No data addressed to the station. Or unable to receive data addressed to the station

due to noise interference. (Missing parts of the data sent from the master)

Unable to receive data due to wire breakdown

Faulty Baud Rate and/or Station Address setting

Power input removed. Or power supply failure.

DATA CONVERSION

I 0 – 100% DATA CONVERSION

Analog input data is converted into digital representations of 0 – 100% proportional to each scaled range. The converted %

values are multiplied by 100 and expressed in 16 bits.

Overrange input is possible from -15 to +115% of the nominal range. When the signal exceeds the limit, the data is fixed at

-15% or +115% respectively. Negative value is represented in 2 s complements.

• Input Range 0 – 5 V DC

≤ -0.75 V

0 V

5 V

≥ 5.75 V

Input Value

-15%

100%

115%

Input %

-1500

10000

11500

Converted Data, Decimal

FA24

2710

2CEC

Converted Data, Hex

Analog output is converted in the reverse order of the input data. The output range 0 – 5 V DC is expressed as 10000 at

5.0 V (100%) and 0 at 0 V (0%).

11500 (2CEC)

10000 (2710)

-0.75

-1500 (FA24)

5.0

5.75

(V)

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