==== ezeio I/O Exp - Register map ====

== Modbus/RTU slave registers ==

Read-only input (command 0x03) registers:

^ Register ^ Address ^ Type ^ Description ^
| 30001 | 0 | UINT_16 | Input 1 raw value (mV, uA or Ohm) |
| 30002 | 1 | UINT_16 | Input 2 raw value (mV, uA or Ohm) |
| 30003 | 2 | UINT_16 | Input 3 raw value (mV, uA or Ohm) |
| 30004 | 3 | UINT_16 | Input 4 raw value (mV, uA or Ohm) |
| 30005 | 4 | UINT_16 | Input 5 raw value (mV, uA or Ohm) |
| 30006 | 5 | UINT_16 | Input 6 raw value (mV, uA or Ohm) |
| 30007 | 6 | UINT_16 | Input 7 raw value (mV, uA or Ohm) |
| 30008 | 7 | UINT_16 | Input 8 raw value (mV, uA or Ohm) |
| 30009 | 8 | UINT_16 | Supply Voltage (mV) |
| 30010 | 9 | UINT_16 | 5V output (mV) |
| 30011 | 10 | UINT_32 | Input 1 raw value (mV, uA or Ohm) |
| 30013 | 12 | UINT_32 | Input 2 raw value (mV, uA or Ohm) |
| 30015 | 14 | UINT_32 | Input 3 raw value (mV, uA or Ohm) |
| 30017 | 16 | UINT_32 | Input 4 raw value (mV, uA or Ohm) |
| 30019 | 18 | UINT_32 | Input 5 raw value (mV, uA or Ohm) |
| 30021 | 20 | UINT_32 | Input 6 raw value (mV, uA or Ohm) |
| 30023 | 22 | UINT_32 | Input 7 raw value (mV, uA or Ohm) |
| 30025 | 24 | UINT_32 | Input 8 raw value (mV, uA or Ohm) |
| 30027 | 26 | UINT_32 | Supply Voltage (mV) |
| 30029 | 28 | UINT_32 | 5V output (mV) |
| 30031 | 30 | UINT_32 | Input 1 pulse count |
| 30033 | 32 | UINT_32 | Input 2 pulse count |
| 30035 | 34 | UINT_32 | Input 3 pulse count |
| 30037 | 36 | UINT_32 | Input 4 pulse count |
| 30039 | 38 | UINT_32 | Input 5 pulse count |
| 30041 | 40 | UINT_32 | Input 6 pulse count |
| 30043 | 42 | UINT_32 | Input 7 pulse count |
| 30045 | 44 | UINT_32 | Input 8 pulse count |
| 30047 | 46 | UINT_32 | not used |
| 30049 | 48 | UINT_32 | not used |
| 30051 | 50 | UINT_32 | Input 1 pulse interval (ms) |
| 30053 | 52 | UINT_32 | Input 2 pulse interval (ms) |
| 30055 | 54 | UINT_32 | Input 3 pulse interval (ms) |
| 30057 | 56 | UINT_32 | Input 4 pulse interval (ms) |
| 30059 | 58 | UINT_32 | Input 5 pulse interval (ms) |
| 30061 | 60 | UINT_32 | Input 6 pulse interval (ms) |
| 30063 | 62 | UINT_32 | Input 7 pulse interval (ms) |
| 30065 | 64 | UINT_32 | Input 8 pulse interval (ms) |
| 30067 | 66 | UINT_32 | not used |
| 30069 | 68 | UINT_32 | not used |
| 30071 | 70 | UINT_32 | Input 1 pulse frequency (Hz*1000) |
| 30073 | 72 | UINT_32 | Input 2 pulse frequency (Hz*1000) |
| 30075 | 74 | UINT_32 | Input 3 pulse frequency (Hz*1000) |
| 30077 | 76 | UINT_32 | Input 4 pulse frequency (Hz*1000) |
| 30079 | 78 | UINT_32 | Input 5 pulse frequency (Hz*1000) |
| 30081 | 80 | UINT_32 | Input 6 pulse frequency (Hz*1000) |
| 30083 | 82 | UINT_32 | Input 7 pulse frequency (Hz*1000) |
| 30085 | 84 | UINT_32 | Input 8 pulse frequency (Hz*1000) |
| 30087 | 86 | UINT_32 | not used |
| 30089 | 88 | UINT_32 | not used |
| 30091 | 90 | UINT_16 | Output 1 status (0/100) |
| 30092 | 91 | UINT_16 | Output 2 status (0/100) |
| 30093 | 92 | UINT_16 | Output 3 status (0/100) |
| 30094 | 93 | UINT_16 | Output 4 status (0/100) |
| 30095 | 94 | UINT_16 | Output 5 status (0/100) |
| 30096 | 95 | UINT_16 | Output 6 status (0/100) |
| 30097 | 96 | UINT_16 | Output 7 status (0/100) |
| 30098 | 97 | UINT_16 | Output 8 status (0/100) |
| 30099 | 98 | UINT_16 | Analog Out 1 status (0-100) |
| 30100 | 99 | UINT_16 | Analog Out 2 status (0-100) |
| 30101 | 100 | UINT_32 | Uptime (s) |
| 30103 | 102 | UINT_16 | constant value 23456 |
| 30104 | 103 | UINT_32 | constant value 123456789 |
| 30106 | 105 | UINT_16 | constant value 57872 (=hE21O) |

Read/write holding (command 0x04) registers:

^ Register ^ Address ^ Type ^ Description ^
| 40001 | 0 | UINT_16 | Input 1 mode |
| 40002 | 1 | UINT_16 | Input 2 mode |
| 40003 | 2 | UINT_16 | Input 3 mode |
| 40004 | 3 | UINT_16 | Input 4 mode |
| 40005 | 4 | UINT_16 | Input 5 mode |
| 40006 | 5 | UINT_16 | Input 6 mode |
| 40007 | 6 | UINT_16 | Input 7 mode |
| 40008 | 7 | UINT_16 | Input 8 mode |
| 40091 | 90 | UINT_16 | Output 1 status (0/100) |
| 40092 | 91 | UINT_16 | Output 2 status (0/100) |
| 40093 | 92 | UINT_16 | Output 3 status (0/100) |
| 40094 | 93 | UINT_16 | Output 4 status (0/100) |
| 40095 | 94 | UINT_16 | Output 5 status (0/100) |
| 40096 | 95 | UINT_16 | Output 6 status (0/100) |
| 40097 | 96 | UINT_16 | Output 7 status (0/100) |
| 40098 | 97 | UINT_16 | Output 8 status (0/100) |
| 40099 | 98 | UINT_16 | Analog Out 1 status (0-100) |
| 40100 | 99 | UINT_16 | Analog Out 2 status (0-100) |

Input modes:

^ Mode ^ Description ^ Unit ^
| 0 | 0-10V (high impedance) | mV | 
| 1 | 0-30mA (200 Ohm internal shunt to common) | uA |
| 2 | Pulse/Resistance (4.87k pull-up to +5V) | Ohm | 
| 3 | Self-test (4.87k pull-up & 200 Ohm shunt both connected) | Ohm | 
| 6 | Thermistor, 10k type II | Kelvin * 100 | 
| 10 | Thermistor, 10k type 3 | Kelvin * 100 | 
| 14 | Thermistor, 2k2 | Kelvin * 100 | 
| 18 | Thermistor, 100k | Kelvin * 100 |