Longo Modbus Products LMP-1.MP2
Table 7: K1
K1.1
N.C.
Not connected
K1.2
GND
Ground
K1.3
7 .. 30 V DC
Power supply input
K1.4
Standard RS-485 A
Data receive/send line A
K1.5
Standard RS-485 B
Data receive/send line B
K1.6
N.C.
Not connected
Table 8: LCD bars & Buttons
Bar 1 LCD
Temp. SP
Active LCD bar presents actual set point relative to range
Min. temp.
(bottom LCD bar) and
Max. temp.
(top LCD bar)
TB1/TB3
(Up-left/Up-right)
Temp. SP Up
Increase by one step, step = (
Max. temp
-
Min. temp
) * 1/10
TB2/TB4
(Down-left/Down-right)
Temp. SP Down
Decrease by one step, step = (
Max. temp
-
Min. temp
) * 1/10
Table 9: S1
MODBUS RTU SETTINGS SOURCE
Switch 1
Switch 2
User settings, from Modbus RTU registers
OFF
OFF
Not used
OFF
ON
Not used
ON
OFF
Default factory settings active,
19200bps/8 data bits/1 stop bit/EVEN
ON
ON
3
Reset LMP-1 module after switch S1 changed, to activate new settings.
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