Pc-Software Fservice - Relay MR005DL User Manual

MR005FA+DL / MR006FA+DL
Calculation of storage capacity
The size of the data memory is 1MByte, but optionally 2MByte or 4Mbyte are possible. In the
worst case the M-Bus frame can be 261 bytes long, but mostly the telegrams are much shorter.
A typical heat meter for example transmits 79 bytes. Water meters and pulse adaptors often use
even shorter frames. Additionally a length field and a point of time is stored with the M-Bus
frame. This adds 12 Bytes. In our example 20 heat meters with 79 bytes M-Bus frame + 12
bytes occupy 1820 bytes inside the FLASH for every readout. The FLASH is organized as a ring
memory with 16 blocks of 64kB (65536 bytes) or in total 1MB. If the current block is full, the next
block will be erased completely. So it could happen that only 15 block are full with data. In this
example there is enough memory to store minimum 15 x 65536 / 1820 = 540 readouts. The
practice shows that usually there are often installations with less meters and shorter M-Bus
telegrams.
Download of stored data
The contents of the data memory can be downloaded in command mode using a direct or a
modem connection with FService or DokomCS.
The most current readouts are also available via keyboard and LCD. The menu "Data exchange"
shows a list with the last 25 readout times. You can scroll through the different points of time
and select one with the E button. Then the data of all meters for this readout is displayed in the
same manner as with "Readout of all".

8 PC-Software FService

The devices can be operated via keyboard without software or as simple level converters with
any M-Bus software. The software FService offers a comfortable access to and control of the
Datalogger and M-Bus Display. The software can work locally with a PC or remotely via a
modem.
The software FService is described in a separate manual, which is delivered with FService. You
will find this free software on the CD "Tools & Docs" and on our homepage www.relay.de.
User Manual MR005FA+DL / MR006FA+DL ·04/2018 · VERSION 1.4
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