COMMUNICATIONS GUIDE

 

RS485 INTERFACE (MODBUS RTU)

 

 

 

 

 

Code

Type

Definition

 

 

 

 

 

 

 

 

 

18

 

R

 

 

 

 

 

19

 

S

 

 

 

 

 

20

 

T

 

 

 

 

 

21

 

U

 

 

 

 

 

22

 

V

 

 

 

 

 

23

 

W

 

 

 

 

 

24

 

X

 

 

 

 

 

25

 

Y

 

 

 

 

 

26

 

Z

 

 

 

 

 

F17

32 bits

UNSIGNED LONG VALUE, 3 DECIMAL PLACES

 

1st 16 bits

 

High Order Word of Long Value

 

 

 

 

 

2nd 16 bits

 

Low Order Word of Long Value

 

 

 

 

Example: 123456 stored as 123456

 

 

 

 

 

i.e. 1st word: 0001 hex, 2nd word: E240 hex

 

 

 

 

 

 

F18

32 bits

DATE MM/DD/YYYY

 

1st byte

 

Month 1 to 12

 

 

 

 

 

2nd byte

 

Day 1 to 31

 

 

 

 

 

3rd and 4th byte

 

Year 1995 to 2094

 

 

 

 

Example: Feb 20, 1995 stored as 34867142

 

 

 

 

 

i.e. 1st word: 0214, 2nd word 07C6

 

 

 

 

 

 

F19

32 bits

TIME HH:MM:SS:hh

 

1st byte

 

Hours 0 to 23

 

 

 

 

 

2nd byte

 

Minutes 0 to 59

 

 

 

 

 

3rd byte

 

Seconds 0 to 59

 

 

 

 

 

4th byte

 

Hundredths of seconds 0 to 99

 

 

 

 

Example: 2:05pm stored as 235208704

 

 

 

 

 

i.e. 1st word: 0E05, 2nd word 0000

 

 

 

 

 

 

F20

32 bits

2’s COMPLEMENT SIGNED LONG VALUE

 

1st 16 bits

 

High Order Word of Long Value

 

 

 

 

 

2nd 16 bits

 

Low Order Word of Long Value

 

 

 

 

 

Note: -1 means “Never”

 

 

 

 

 

 

 

F21

16 bits

2’s COMPLEMENT SIGNED VALUE, 2 DECIMAL PLACES

 

 

 

Power Factor

 

< 0

 

Leading Power Factor - Negative

 

 

 

 

 

> 0

 

Lagging Power Factor - Positive

 

 

 

 

Example: Power Factor of 0.87 lag is used as 87

 

 

 

 

 

 

i.e. 0057

 

 

 

 

 

 

 

F22

16 bits

TWO 8-BIT CHARACTERS PACKED INTO 16-BIT UNSIGNED

 

MSB

 

First Character

 

 

 

 

 

LSB

 

Second Character

 

 

 

 

Example: String ‘AB’ stored as 4142 hex

 

 

 

 

 

 

FC101

16 bits

RS 485 Baud Rate

 

0

 

9600 baud

 

 

 

 

 

1

 

19200 baud

 

 

 

 

 

2

 

38400 baud

 

 

 

 

 

3

 

57600 baud

 

 

 

 

 

4

 

115200 baud

 

 

 

 

MM300 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE

35

Page 39
Image 39
GE MM300 manual Unsigned Long VALUE, 3 Decimal Places, Date MM/DD/YYYY, Msb, Lsb

MM300 specifications

The GE MM300 is a robust and versatile controller designed primarily for industrial automation applications. Built to tackle the demands of modern manufacturing environments, this controller offers a range of features that contribute to its popularity among engineers and operators.

One of the standout features of the GE MM300 is its scalability. The device can be easily configured to meet the needs of both small and large systems. Its modular architecture allows users to add or remove components based on the specific requirements of their applications, facilitating a more tailored approach to automation.

The MM300 supports various communication protocols, including Ethernet/IP, Modbus TCP, and more, ensuring seamless integration with a variety of devices and systems. This feature significantly enhances interoperability, allowing users to connect the controller to existing infrastructure without extensive reconfiguration.

In terms of processing power, the MM300 is equipped with a high-performance processor that can handle complex tasks with ease. With advanced data handling capabilities, it supports real-time data processing, enabling faster decision-making and improving overall operational efficiency. This capability is particularly beneficial for applications requiring precise control and monitoring.

Moreover, the GE MM300 boasts a user-friendly interface, featuring an intuitive programming environment that simplifies the development of control applications. This includes an integrated development environment (IDE) and support for popular programming languages, making it accessible for both seasoned programmers and those new to automation technologies.

The device is designed to operate in challenging industrial conditions, featuring a rugged construction that ensures durability and longevity. Its ability to withstand extreme temperatures, vibrations, and other environmental stressors enhances its reliability in demanding applications, which is crucial for minimizing downtime in production processes.

Security is another critical aspect of the GE MM300. The controller incorporates advanced security features to protect against unauthorized access and cyber threats, helping organizations ensure the integrity of their operations.

In summary, the GE MM300 stands out due to its scalability, versatile communication options, high processing capabilities, user-friendly programming environment, rugged design, and security features. These characteristics make it a reliable choice for industries seeking to enhance their automation processes and improve overall efficiency. Whether for small-scale or large-scale applications, the MM300 provides a comprehensive solution to meet the evolving needs of modern manufacturing.