AB 1785-ENET PLC-5 Ethernet Interface Module

AB 1785-ENET PLC-5 Ethernet Interface Module

Basic information: This manual is intended for control engineers who are responsible for designing, installing, programming, or debugging the use of this module, and who have knowledge of PLC-5 programmable controller products and Ethernet-related topics such as TCP/IP protocols, Internet addressing, etc. The manual is intended to guide the user in the installation and configuration of this interface module to enable communication over Ethernet. The manual is intended to guide the user in the installation and configuration of the interface module for communication over Ethernet.

Installation Guide

Preparation: Prepare equipment and tools such as the PLC-5 Ethernet interface module, 58-pin connector plug, related manuals, record the Ethernet hardware address, and take precautions against static electricity.

Installation Procedure: Firstly, carefully align and insert the connector plug into the PLC-5 processor, then connect the interface module to the processor and tighten the screws, and finally install the combination module into the left slot of the 1771 I/O chassis, and make sure the power of the chassis is switched off during the whole installation.

Disassembly points: first cut off the power, lift the locking lever, and at the same time lift the ejector tab to remove the module, be careful to avoid damaging the components when separating the module from the processor.

Configuration

IP address assignment: Each Ethernet hardware address needs to be configured with a unique IP address, which can be entered manually in the programming software or dynamically assigned through the server using the BOOTP protocol.

Manual configuration: In the programming software, first disable BOOTP and then enter the Ethernet-specific information such as diagnostic file number, IP address, etc. in sequence.

BOOTP Configuration: There should be a BOOTP server in the network, edit the BOOTPTAB file, input the module's hardware address, IP address and other information, save it, run the server and restart the chassis.

Communication Function

Status monitoring: Judge the operation status of the module by observing the LEDs, such as the STAT light is always on in green which indicates normal connection to the network, and blinking red which indicates a fault. You can also check the Ethernet status data with the help of diagnostic files to understand the communication situation.

Use of MSG command: This command is used to transfer data, and when using it, you need to set the control block and command parameters, such as command type, data address, number of elements to be transferred, etc., and it can be used to communicate with a variety of devices.

Communication with ControlLogix devices: With the ControlLogix 1756-ENET module, configure the MSG instruction and related parameters, such as setting the Link ID number, to communicate with other PLCs and SLC processors.

Specifications and Diagnostics

Module specifications: Covering electrical, environmental, mechanical and other parameters, such as backplane current of 2.2A, operating temperature of 0-60°C, support for 64 simultaneous connections, etc., with CSA, UL, CE and other approvals.

Performance Data: Provides PLC to PLC and workstation to PLC performance data under different operation and data volume, such as MSG per second, time per MSG, words per second, etc.

SNMP Management Information Base: The module supports SNMP, and the MIB II data set contains management information on system, interface, UDP, IP, ICMP, TCP, and so on.

Error Code: When the status LED blinks red, it indicates a fault, and the error code is displayed through a specific blinking sequence, according to which the type of fault can be judged, e.g. 01 means that the General 68000 test has failed.

Technical specification parameters

Electrical parameters: The backplane current is 2.2A, this parameter determines the amount of current obtained from the backplane when the module is working, a stable current supply is the basis for normal operation of the module. The heat dissipation is 37.54 BTU/hr, which reflects the rate of heat generated by the module in the working process. Reasonable heat dissipation design helps to maintain the stable working temperature of the module, avoiding performance degradation or failure due to overheating.

Environmental parameters: the working temperature range is 0 to 60°C (32 - 140°F), the storage temperature range is -40 to 85°C (-40 - 185°F), this wide range of temperature adaptability enables the module to be stored and used in different environmental conditions, whether in cold storage environment or hot industrial production site, can ensure a certain degree of adaptability. The relative humidity requirement of 5% to 95% (non-condensing) ensures that under different humidity environments, the module will not cause short-circuit and other problems due to water vapour condensation inside the module, which guarantees the electrical performance and stability of the module.

Mechanical parameters: In terms of impact, it can withstand 30 g peak acceleration with a duration of 11 ± 1 ms during operation, and 50 g peak acceleration with a duration of 11 ± 1 ms during non-operation. This makes the module resistant to mechanical shocks, such as bumps during transport of equipment and vibrations at industrial sites, and reduces the risk of damage to internal components caused by shocks. Vibration parameters are 2 g @ 10 to 500 Hz, 0.012 inches peak-to-peak displacement, indicating that the module in a certain frequency and displacement range of anti-vibration performance is good, can adapt to the common vibration in industrial environments, to ensure that the module in the vibration of the reliable operation of the environment.