B－10

B10

Appendix B

Appendix B

Explanation of function codes

Read Coil Status [01h]:

This function reads the status (ON/OFF) of selected coils. An example follows below.

ξRead intelligent input terminals [1] to [5] of an inverter having a slave address “8.”

ξThis example assumes the intelligent input terminals have terminal states listed below.

Item

 

 

Data

 

 

Intelligent input

[1]

[2]

[3]

[4]

[5]

terminal

 

 

 

 

 

Coil number

7

8

9

10

11

Coil Status

ON

OFF

ON

OFF

OFF

Query:

No.

Field Name

Example

(Hex)

 

 

1

Slave address *1

08

2

Function code

01

3

Coil start address *4

00

 

(high order)

 

4

Coil start address *4

06

 

(low order)

 

5

Number of coils

00

 

(high order *2)

 

6

Number of coils

05

 

(low order *2)

 

7

CRC-16 (high order)

1C

8

CRC-16 (low order)

91

Response:

No.

Field Name

Example

(Hex)

 

 

 

1

Slave address

08

2

Function code

01

3

Data size (in bytes)

01

4

Coil data *3

05

5

CRC-16

(high order)

92

6

CRC-16

(low order)

17

Note 1: Broadcasting is disabled.

Note 2: When 0 or more than 31 is specified as a number of coils, error code “03h” is returned.

Note 3: Data is transferred by the specified number of data bytes (data size).

Note 4: The PDU Coils are addressed starting at zero. Therefore coils numbered 1-31 are addressed as 0-30. Coil address value (transmitted on Modbus line) is 1 less than the Coil Number.

ξThe data set in the response shows terminal state of coils 7 to 14.

ξData “05h = 00000101b” indicates the following assuming coil 7 is the LSB.

Item

Data

Coil Number

14

13

12

11

10

9

8

7

Coil Status

OFF

OFF

OFF

OFF

OFF

ON

OFF

ON

ξWhen a read coil is outside the defined coils, the final coil data to be transmitted contains “0“as the status of the coil outside the range.

ξWhen the Read Coil Status command cannot be executed normally, see the exception response.

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Hitachi CP-X200 instruction manual Explanation of function codes, Query
Page 252 Page 254

CP-X200 specifications

The Hitachi CP-X200 is a versatile and robust projector designed to cater to the needs of educational and business environments. It combines affordability with high-quality performance, making it an attractive option for various presentations and multimedia applications.

At the heart of the CP-X200 is its high brightness capability, with a lumen output of 3,000 ANSI lumens. This feature enables the projector to deliver clear and vibrant images even in well-lit rooms. The resolution of XGA (1024 x 768 pixels) ensures that text and graphics are sharp, making it suitable for everything from classroom lectures to corporate presentations.

One of the standout characteristics of the Hitachi CP-X200 is its advanced lamp technology. The projector uses a long-lasting lamp that can provide up to 5,000 hours of usage in standard mode, allowing for extended intervals between lamp replacements. Additionally, the ECO mode can further enhance the lamp life, extending its longevity while reducing energy consumption.

The CP-X200 is equipped with a variety of connectivity options, including HDMI, VGA, and composite inputs, allowing users to easily connect it to various devices such as laptops, DVD players, and other multimedia systems. The inclusion of USB and RS-232 interfaces ensures compatibility with different control systems, making it a flexible choice for diverse setups.

Another significant feature is the projector's built-in 10-watt speaker, which provides decent audio output, eliminating the need for external speakers in smaller venues. The speaker system enhances presentations, ensuring that audio and visuals are cohesive, promoting better audience engagement.

Portability is another key aspect of the Hitachi CP-X200, which weighs just around 3.5 kg (approximately 7.7 lbs), allowing for easy transport between locations. Its compact design makes it suitable for both fixed installations and mobile use, catering to professionals who require a projector that adapts to various environments.

The user-friendly interface and robust remote control enhance the projector's operability, providing easy access to essential functions. Additionally, features such as auto keystone correction adjust the image to maintain consistent quality even when the projector is not perfectly aligned with the screen.

In summary, the Hitachi CP-X200 is a feature-rich projector that embodies reliability, performance, and ease of use. Its combination of high brightness, various connectivity options, long lamp life, portability, and integrated audio makes it an excellent choice for education and business professionals seeking a dependable presentation solution.
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