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SCL PROTOCOL

A more detailed description of the Nokeval SCL protocol can be downloaded from Nokeval www pages

http://www.nokeval.com/manuals/sclmanual.pdf. Some additional commands have been added to SCL protocol for MTR and

RTR series devices that are not covered by the general SCL manual. These commands are explaided in the list below.

MTR970 supports the following SCL commands:

TYPE ?

Returns the model name and software version.

SN ?

Returns the device's serial number, for example ”A123456”

MEA CH 1 ?

Returns the last received value from the device that is defined as ”channel 1”.

DBG 1 ?

Returns the oldest unread data packet from the buffer.

DBR 1 xx ?

Returns a data packet from the ring buffer location xx.

DBX

Clears the ring buffer.

DBS 1 ?

Returns the size of the ring buffer.

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Summary of Contents for MTR970

Page 1: ...MTR970 Radio data receiver User manual Firmware versions V1 0 3 1 10 08 05 ...

Page 2: ...y band ISM so it can be freely used for example almost in whole Europe MTR970 is designed for desktop use but it can also be installed for example upside down to a ceiling or to a cable rack The receiver is connected to a computer using RS 485 or RS 232 bus and it requires PromoLog application that reads the information from the device Nokeval SCL protocol is used for data transmission between the...

Page 3: ...ector with 3 81 mm raster combined with power supply terminal 4 TxD terminal 3 RxD Maximum cable length is 10 m Protocol Nokeval SCL Baud Rates 300 600 1200 2400 4800 9600 19200 Supply voltage Connector 1 1 3 mm DC jack centre conductor positive Connector 2 detachable screw post connector with 3 81 mm raster terminal 1 terminal 2 Connector 3 detachable screw post connector with 3 81 mm raster term...

Page 4: ...l 8 D0 to terminal B When using serial converters not manufactured by Nokeval connect receiver s terminal D1 to serial converter s terminal B and terminal 8 D0 to terminal A RS 232 is connected to terminals 2 GND 3 RxD and 4 TxD By default the device is jumpered to use RS 485 bus so if RS 232 is required the jumper must be set to RS 232 position To do this screw off the two screws from the bottom ...

Page 5: ...MTR970 is designed for desktop use but it can also be installed for example upside down to a ceiling or to a cable rack The best installation site for the device is a fairly large grounded metal surface that has little surrounding metal walls The best signal levels are achieved when there is a line of sight to transmitters Walls and obstacles attenuate the signal and therefore decrease the coverag...

Page 6: ... are 0 123 Baud Baud rate selection Options are 300 600 1200 2400 4800 9600 and 19200 Receive submenu Rcv CRCChk If selected CRC checksum of received data packets is checked and corrupted packets are rejected The setting is on by default and there is no reason to disable the setting CH1ID One MTR series transmitter except MTR260 can be defined to act as channel one When MTR970 receives MEA CH 1 co...

Page 7: ...anual These commands are explaided in the list below MTR970 supports the following SCL commands TYPE Returns the model name and software version SN Returns the device s serial number for example A123456 MEA CH 1 Returns the last received value from the device that is defined as channel 1 DBG 1 Returns the oldest unread data packet from the buffer DBR 1 xx Returns a data packet from the ring buffer...

Page 8: ...8 Yrittäjäkatu 12 37100 Nokia Finland Tel 358 3 3424800 Fax 358 3 3422066 www nokeval com ...

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