How do you monitor the PLC backup battery status remotely?

Set up the battery alarm to email the techs or scheduler when the battery is starting to fail. You can also send it straight to work order software to create a “change PLC battery ticket”.

In siemens PLC OB81 can be used to manage and respond to situations when the PLC detects a low battery condition. This OB is automatically triggered by the system when the PLC’s backup battery voltage falls below a specified threshold, indicating that the battery might soon fail and needs replacement.Using OB81 in the Siemens PLC enables you to proactively handle low battery conditions by executing predefined actions immediately when such a situation is detected. This helps in maintaining the reliability and uptime of your PLC systems.

You can set up various other features on the plc to set it up as a server. It can be set up as a vnc server and the battery status indicator can b added as a data type, or it can be set to send emails and sms to notify operators. Another option is snmp protocol which I believe should b able to monitor plc diagnosis over tcp/ip with the help of a monitoring client. It depends on the plc manufacture and the method available with a touch of creativity.

Essa fun??o existe em CLPs mais novos. Nos "menos antigos" das marcas tradicionais, você pode pegar o bit de health da bateria e colocar isso em um supervisório ou ainda, via ladder, em uma saída do CLP ligando uma lampada. Nos muito antigos, n?o tem jeito, só a boa e velha inspe??o com o multímetro que pega isso.

Use OEM provided software, some manufacturers like seimens provide features for plug and play maintainance or remote while Unitronics has remote manager for maintainance. Also protocols like snmp, vnc allow for remote monitoring of networks and rdp for windows embedded systems. You can always check documentation and ask OEM for further information

This is a great solution if you need to independently monitor the status of the backup battery. Regardless of any changes done to the PLC this status will always show if the battery is in good condition. For instance, if the PLC program accidentally gets modified you will know that this status is unaffected.

única op??o em CLPs Dinossauros. Nos equipamentos mais novos isso n?o acontece pois temos no programa um sinal de health da bateria.

Most of the Controllers has capability to generate the Low Battery status as System alarm to the remote Operator. Modern PLCs are provided with Capacitors configuration to hold the volatile memory for more than 72 hours which eliminates the need of additional Battery.

In this era, where you can communicate a toaster with a computer, you can easily send this kind of information to an SCADA application. Or, if you want to make it nicesiest, you can use MQTT (if you PLC supports it directly or use some computer as mediuem) to send to a web browser, desktop or a smartphone application and shows it as a notification. Your imagination is the limit!

Some battery monitoring devices may also support remote connectivity through an Ethernet or Wi-Fi connection, allowing you to monitor the battery status of your PLC from anywhere in the world. This feature is particularly useful for businesses with multiple locations or for those that need to monitor PLCs in remote or hard-to-reach locations.

Many PLCs support email. Not too hard for some of these maintenance events to notify the maintenance department. Also, good old Preventative Maintenance. Why wait for the battery to die before replacing it? Mr. Murphy loves to show up at the worst time - "I got the email to replace the battery at 2AM and power went out that morning before I could replace it." If it's a 10 year battery, would it hurt to replace it every 5 years on a PM schedule, i.e. a planned replacement?

Es fácil y simple. Poner una etiqueta con la fecha en que se cambiaron. Cuando pasen 5 a?os cambiar las baterías, estén como estén. Es mejor cambiar las baterías periódicamente, a que se da?en o no cumplan su misión de respaldo.

PLC batteries can be bought off the market at a price usually half of that provided by the manufacturer. Batteries bought in this way wouldn't have the quality check done that could mean less power backup. By monitoring the battery information through any of the above mentioned ideas would provide insight on the battery's life cycle.

If it is a critical process, run the PLC on an active UPS. Requiring people to use 125 characters to post a response is ridiculous.