BRONKHORST®
9.17.061
EL-FLOW
Base
Series Mass Flow Controllers
Page 21
Valid values for the slave address are between 1 and 247, valid values for the baud rate are 9600, 19200
and 38400, valid values for parity are 0 (= None), 1 (= Odd) and 2 (= Even). The changed values will be
effective immediately after changing.
Using micro-switch and LEDs on top of the instrument
Readout bus-address/MAC-ID and baud rate:
Pressing the switch 3x briefly with intervals of max. 1 second in normal running/operation mode will
trigger the instrument to “show” its bus-address/MAC-ID and baud rate.
For indication the bus-address/MAC-ID the green LED will flash the amount of tens and the red LED the
amount of units in the number. For indication of baud rate setting, both LEDs will flash.
The flashes are called “count-flashes” and have a pattern of 0.5 sec. on, 0.5 sec. off.
Table: LED indications for bus-address and baud rate
Green LED
Red LED
Time
Indication
amount of count
flashes (0...12)
Off
0 ... 12 sec.
Maximum
tens in bus-address for instrument
Off
Amount of count flashes
(0...9)
0 ... 9 sec.
Maximum
units in bus-address for instrument
amount of count
flashes (1...3)
amount of count flashes
(1...3)
1 ... 3 sec.
Maximum
baud rate setting for instrument
1 = 9600 Baud
2 = 19200 Baud
3 = 38400 Baud
Note: Value zero will be indicated by a period of 1 sec. off (0.5 sec. off + 0.5 sec. off).
Examples:
For bus-address 35 / 9600 baud the green LED will flash 3 times, the red LED will flash 5 times and
both LEDs will flash 1 time.
For bus-address 20 / 19200 baud the green LED will flash 2 times, the red LED will flash 0 times and
both LEDs will flash 2 times.
For bus-address 3 / 38400 the green LED will flash 0 times, the red LED will flash 3 times and both
LEDs will flash 3 times.
