Instruction/ maintenance manual of the product MELSECNET/H Mitsubishi Electronics
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2002 No.189E NEW PRODUCT RELEASE Mitsubishi PLC MELSECNET/H Network Module QJ71LP21S-25 New! The QJ71LP21S-25 is suitable for systems where the operation cannot be interrupted, such as LCD (Liquid Crystal Display) and semiconductor production lines.
2 [Features] z External power supply prevents station from failing when power supply fails (1) When the PLC system power supply is accidentally stopped, the QJ71LP21S-25 wo rks as a repeater using the power supplied from an external power supply, which inhibits the communication disruption.
3 z Differences from QJ71LP21-25 The QJ71LP21S-25 has the same function and performance as the QJ71LP21-25. Therefore, the program for the QJ71LP21-25 is available for the QJ71LP21S-25. However, the QJ71LP21S-25 requires two I/O slot s while the Q71LP21-25 requires only one I/O slot.
0210 (MEE) Specifications subject to change without notice. Printed in Japan on recycled paper. [Packing list] Product name Model MELSECNET/H Network Module QJ71LP21S-25 [Manual] Manual name Manual su.
An important point after buying a device Mitsubishi Electronics MELSECNET/H (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Mitsubishi Electronics MELSECNET/H yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Mitsubishi Electronics MELSECNET/H - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Mitsubishi Electronics MELSECNET/H you will learn all the available features of the product, as well as information on its operation. The information that you get Mitsubishi Electronics MELSECNET/H will certainly help you make a decision on the purchase.
If you already are a holder of Mitsubishi Electronics MELSECNET/H, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Mitsubishi Electronics MELSECNET/H.
However, one of the most important roles played by the user manual is to help in solving problems with Mitsubishi Electronics MELSECNET/H. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Mitsubishi Electronics MELSECNET/H along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
