The CTM-ONE functions as a remote wireless gateway, mapping modem inputs/outputs to MODBUS IDs and responding to queries.
Additionally, the CTM-ONE Slave can transmit modem-specific data in MODBUS format, such as RF signal strength.
CTM-ONE Self-Slave Input Register Chart
Register | Hex Value Example | Value Example | Conversion | SYSDB Value |
1-4 |
| 0 or 12 | 12 Volts | AIN1-6 |
7 | 04BE | 1214 (16-bit INT) | 1214/100 = 12.14 Volts | GPIO_VCC |
8 | 0048 | 72 (16-bit INT) | -72 | CELL_RSSI |
9 | 003E | 62 (16-bit INT) | 62 Celsius | GPIO_TEMP |
10 | 1D07 | 7431 (16-bit INT) | Convert Hex to Dec | GPS Day & Month derived from GPS_ISO8601 |
11 | 07E5 | 2021 (16-bit INT) | Year 2021 | GPS Year derived from GPS_ISO8601 |
12 | 120D | 4621 (16-bit INT) | Convert Hex to Dec | GPS Hours & Minutes derived from GPS_ISO8601 |
13 | 3241 | 12865 (16-bit INT) | Convert Hex to Dec | GPS Seconds & Valid Flag derived from GPS_ISO8601 and GPS_VALID |
14,15 | 3F5C 14E6 | 0.85969388 (32bit Float) | 0.85969388 Radians | GPS Latitude |
16,17 | C009 6377 | -2.14669585 (32bit Float) | -2.14669585 Radians | GPS Longitude |
18 | 0014 | 20 (16-bit INT) | 20 m/s | GPS Speed |
19 | 00F7 | 247 (16-bit INT) | 247 degrees | GPS Heading |
CTM-ONE Self-Slave Input Register Chart
Register | Hex Value Example | Value Example | Conversion | SYSDB Value |
1-4 |
| 0 or 1 | Active or Not Active, No Conversion | DIN1-4 |
CTM-ONE Self-Slave Output Register Chart (Coils)
Register | Hex Value Example | Value Example | Conversion | SYSDB Value |
1-4 |
| 0 or 1 | Active or Not Active, No Conversion | DOUT1-4 |