The 1784-PCMK communication card is a PCMCIA communication interface card that is manufactured by PLC a division of PLC Automation. The 1784-PCMK card is commonly used for interfacing the devices on the DH+, the DH485, and the Remote I/O communication networks to a personal computer or to a notebook computer. The Data Highway Plus (DH+) network refers to a Local Area Network (LAN) that is designed for supporting remote programming and also for messaging between the computers and the controllers. This network is used mostly when interfacing with the factory-floor applications. The 1784-PCMK card is easy to install in the communication module. It is used for providing a simple communication interface between the PLCs, the PCs, and the SLCs. The 1784-PCMK card provides a high level of performance, and it is intended for use in the Pollution Degree 2 rated industrial environments, and in Overvoltage Category II applications.
The 1784-PCMK card can be used in environments where the altitude is up to 2000 meters above sea level without the unit's output derating. According to the IEC/CISPR publication 11, the 1784-PCMK card is considered a Class A piece of industrial equipment. The installer should always ensure that the proper precautions have been adhered to when installing or uninstalling the module. Without applying proper precautions, there is a likelihood of potential difficulties in operating the unit, and the risk of component damage. The 1784-PCMK card is sensitive to electrostatic discharge. If it is exposed to electrostatic damage, this might cause internal damage and affect normal operations. Therefore, proper guidelines to prevent electrostatic discharge need to be adhered to from the time of installation and throughout component use.
