E2230
Rev 09.03.2021
2. via Modbus
2.1. Indication / logging mode
E2230 series shall respond only to following Modbus functions in indication / logging
mode to make sure device is working correctly without any interruptions:
1.
FC 03 Read Holding Registers Start 255, QTY 11
a.
Register 255 Device status, logging stop, memory overwritten
b.
Register 256 Last Temperature measurement
c.
Register 257 Last Humidity measurement
d.
Register 258 Last CO2 measurement
e.
Register 259 Measurement errors
f.
Register 260 CURRENT YEAR
g.
Register 261 CURRENT MONTH
h.
Register 262 CURRENT DAY
i.
Register 263 CURRENT HOUR
j.
Register 264 CURRENT MINUTE
k.
Register 265 CURRENT SECONDS
2.
FC 03 Read Holding Registers Start 412 QTY 11
a.
Register 412 Recorded units LSB 2 out of 4 bytes
b.
Register 413 Recorded units MSB 2 out of 4 bytes
c.
Register 414 Last Temperature record
d.
Register 415 Last Humidity record
e.
Register 416 Last CO2 record
f.
Register 417 Last logged data YEAR
g.
Register 418 Last logged data MONTH
h.
Register 419 Last logged data DAY
i.
Register 420 Last logged data HOUR
j.
Register 421 Last logged data MINUTE
k.
Register 422 Last logged data SECONDS
2.3 Configuration / checking mode
E2230 series can be put into configuration / checking mode by writing 1 into register 255
while the device is in indication / logging mode. After that device 2 seconds LEDs shall
blink independently to indicate that the device is in configuration mode. After that user
shall gain access to following Modbus registers:
Register 16 Logging interval (s), allowed values: [10, 15, 20, 30, 60, 120, 180, 240, 300, 360,
600, 900, 1200, 1800, 3600, 7200, 10800, 14400, 21600, 43200]
Register 17 Restart, writing 42330 will trigger restart. No modbus response will follow.
Register 168, CO2 averaging (s) allowed values: 0...32000
Registers 260-265 (Current Time)
13
