Word No. n | Emerson RS-232 (DOP-A/AE/AS, DOP-B Series) specs

Series HMI Connection Manual

Definition of PLC Read/Write Address a. Registers

Type	Format	Read/Write Range	Data	Note
Type	Word No. (n)	Read/Write Range	Length	Note
	Word No. (n)		Length
Data Word D	Dn	D0 – D7999	Word
Special Data Word SD	SDn	SD0 – SD255	Word	3
Data Word Z	Zn	Z0 – Z15	Word
Timer T	Tn	T0 – T255	Word
Counter C	Cn	C0 – C199	Word
Double word Counter CDW	CDWn	CDW200 – CDW255	Double
			Word
Double word Data Word DDW	DDWn	DDW0 – DDW7998	Double
			Word
b. Contacts
Type	Format	Read/Write Range		Note
Type	Bit No. (b)	Read/Write Range		Note
	Bit No. (b)
External Output Relay Y	Yb	Y0 – Y377		Octal
External Input Relay X	Xb	X0 – X377		Octal
Internal Relay M	Mb	M0 – M1999
Special Internal Relay SM	SMb	SM0 – SM255		3
Status Relay S	Sb	S0 – S991
Timer T	Tb	T0 – T255
Counter C	Cb	C0 – C255

NOTE

1)Emerson EC20 series PLC has two communication ports, COM0 and COM1. They are provided for the communication protocol for connecting to PC, Modbus communication protocol and user-defined protocol. The default setting is COM0 to be enabled only, so the user needs to set the communication mode as Modbus RTU via PC software before using it.

2)COM1 supports RS-232 and RS-485.

3)Please note that not all of the addresses can be written when reading SM and SD device. We recommend the user not to set all of the addresses as write address except when setting parameters.

42	V1.01 Revision November, 2011

RS-232 (DOP-A/AE/AS, DOP-B Series) specifications

The Emerson DOP-B Series and RS-232 communication protocol, including the DOP-A, DOP-AE, and DOP-AS models, represent a significant advancement in the field of industrial automation and control systems. This series is designed to offer seamless integration, robust performance, and enhanced user experience in a variety of applications.

The DOP-B Series is distinguished by its high-performance capabilities and flexible configurations. This series supports a wide range of communication protocols, allowing for easy integration with existing systems. Among its features, the DOP-B Series offers a vibrant and user-friendly touchscreen interface, which enhances operator interaction and reduces the likelihood of errors. The display is designed for clarity, with high resolution and brightness that ensures readability in various lighting conditions.

Key technologies incorporated into the DOP-B Series include advanced processing power, which enhances responsiveness and allows for complex computations to be performed efficiently. Additionally, the series is built with durable materials designed to withstand harsh environmental conditions, making it suitable for industrial applications where reliability is critical.

The RS-232 communication port, utilized in the DOP-A, DOP-AE, and DOP-AS models, provides a simple yet effective means of data exchange between the display units and various devices. RS-232 is known for its simplicity and cost-effectiveness, making it a popular choice for connecting equipment in legacy systems. These models ensure reliable and consistent data transmission, supporting various baud rates and communication parameters to accommodate diverse user needs.

One of the standout characteristics of the DOP-A/AE/AS models is their versatility in handling multiple input/output configurations. Users can easily customize their setups to suit specific operational requirements, whether it involves data logging, remote monitoring, or control functions.

Together, the Emerson DOP-B Series and RS-232 models exemplify the company's commitment to innovation and excellence in industrial control solutions. By providing advanced features, robust support, and a user-friendly interface, these models are designed to enhance operational efficiency across a spectrum of industries, ultimately contributing to improved productivity and effectiveness in modern automation environments.

Word No. (n)

RS-232 (DOP-A/AE/AS, DOP-B Series) specifications