TERACOM TDI340 S0 Pulse Counter with Modbus RTU Interface User Manual
Short description
TDI340 is а S0 pulse counter with the MODBUS RTU interface. It has 4 isolated digital inputs, complying with the S0 standard 62053-31. The S0 pulse counter works in polling or edge modes. In edge mode, it can be set up to count on rising, falling, and both edges.
The device is dedicated to the S0 pulse counter but it also provides simultaneous readings for the state of the digital inputs – OPEN/CLOSE. Independent delays for Low-To-High and High-To-Low transitions can be applied. The delays are from 0 to 656 seconds in а 10mS step and work if the counter for the corresponding digital input is in polling mode.
Features
- RS-485 interface carrying up to 63 nods;
- Non-volatile memory for the counters;
- LED indicator for the status of communication;
- Isolated digital inputs;
- 32-bit counters;
- Built-in 120ohms termination resistor;
- DIN rail mounting;
- Firmware update via the interface.
Applications
- Remote monitoring of measurement device with an S0 output;
- Remote data acquisition;
- Industrial process control.
- Process monitoring.
- Energy management.
Specifications
- Physical characteristics
Dimensions: 35x86x59 mm (2 module enclosure)
Weight: 60 g
Mounting: On 35 mm DIN top-hat rail - Environmental limits
Operating temperature range: -20 to 60°C
Operating relative humidity range: 10 to 90% (non-condensing)
Storage temperature range: -25 to 65°C
Storage relative humidity range: 5 to 95% (non-condensing)
Ingress protection: IP40 (connections IP20) - Power supply
Operating voltage range (including -15/+20% according to IEC 62368-1): 5 to 30 VDC
Current consumption: 50mA@5V - Digital inputs
Isolation: Functional, 1kV DC
Independent modes: OPEN/CLOSED (“Dry contact”) and COUNTER (S0 compatible)
Maximum count value: 232 – 1
Maximum input voltage: +5.5VDC
Maximum source impedance for “0” reading: 800 Ohm
Minimum source impedance for “1” reading: 1 MOhm
Current max. (With 0-ohm source impedance): 3 mA
Maximum frequency for edge counter mode: 100Hz
Polling period: 10mS
L-H/H-L transition delay interval: 0 to 65535 x (polling period); not available for edge counter mode - Interface
Protocol: Modbus RTU
Physical layer: RS-485 serial line
Number of bus transceivers: up to 63
Bus cable: Twisted, shielded, 2×0.5mm²
Response time Read/Write: 50mS maximum - Connectors
Type: 3.81mm pitch screwless pluggable for 28 to 16 (AWG) / 0.081 to 1.31 (mm²) wires - Warranty
Warranty period: 3 years
Status indicator
The status of the device is shown by a single LED, located behind the semitransparent front panel:
- If the LED blinks for a period of 1 second, the sensor works properly;
- If the LED blinks for a period of 3 seconds, there isn‘t communication with the controller;
- If the LED doesn‘t blink, there isn‘t a power supply.
Pinout
- 5-pins connector
1 – +VDD (5 to 30)
2 – GND
3 – Line-A+
4 – Line-B5 – Terminator - 6-pins connector
1 – Digital input 1 (S01+)
2 – SGND
3 – Digital input 2 (S02+)
4 – Digital input 3 (S03+)
5 – SGND
6 – Digital input 4 (S04+)
Installation
Two-Wire MODBUS definition according to modbus.org:
“A MODBUS solution over a serial line should implement a “Two-Wire” electrical interface in accordance with EIA/TIA-485 standard. On such a “Two-Wire” topology, at any time one driver only has the right for transmitting.
In fact, a third conductor must also interconnect all the devices of the bus – the common.”
A daisy-chain (linear) topology and UTP/FTP cables for multiple sensors are strongly recommended.
For proper operation of the interface, terminators (120 ohms resistors) must be installed at both ends of the bus.
The device has a built-in 120-ohm resistor and to terminate the line, “Line B-“and “Term” must be shortened.
Factory default settings
Disconnect the power supply.
Press and hold the “Setup” button. Connect the power supply not releasing the button.
The status LED will be ON for 3 seconds and after this will flash for 7 seconds. After that, the LED will be ON again.
Release the button. The device will restart with factory default settings.
Firmware update
The firmware of the device can be updated by Teracom controller with MODBUS RTU supports or TSU100
(Teracom 1-Wire and MODBUS RTU devices update module).
To put the sensor in update mode, do the following:
Disconnect the sensor from the bus. Disconnect the power supply.
Press and hold the “Setup” button. Connect the power supply not releasing the button.
The status LED will be ON for 3 seconds. If in these 3 seconds, the button is released and pressed 3 times the device goes into update mode.
In the update mode status LED will be ON permanently.
Important: The sensor can be updated only if it is alone on the bus.
Modbus address table
| Register name | R/W | FC | PDU decimal address | Logical decimal address | Data size | Default | Valid values |
| Holding registers | |||||||
| RS-485 address | R/W | 3,6,16 | 10 | 40011 | uint16 | 1 | 1 to 247 |
| Baud rate * | R/W | 3,6,16 | 11 | 40012 | uint16 | 19200 | 2400, 4800, 9600, 19200, 38400, 57600 |
| Parity, data, stop bits * | R/W | 3,6,16 | 12 | 40013 | uint16 | 1 | 1=E81, 2=O81, 3=N81 |
| Data order | R/W | 3,6,16 | 13 | 40014 | uint16 | 1 | 1=MSWF (MSW, LSW) 2=LSWF (LSW, MSW) |
| Sub-family number | R | 3 | 14 | 40015 | uint16 | 0xDF | |
| FW version | R | 3 | 15 | 40016 | uint16 | ||
| Vendor URL | R | 3 | 18 | 40019 | 64 bytes UTF-8 | teracomsystems.com | |
| Counter mode Input1 | R/W | 3,6,16 | 110 | 40111 | uint16 | 2 | 1=Polling 2=Edge |
| Counter edge Input1 | R/W | 3,6,16 | 111 | 40112 | uint16 | 1 | 1=Rising 2=Falling 3=Both |
| Impulses per real value Input1 | R/W | 3,6,16 | 112 | 40113 | uint16 | 2000 | 0 to 65535 |
| Delay Low-to-High Input1 (x10mS) | R/W | 3,6,16 | 113 | 40114 | uint16 | 0 | 0 to 65535 |
| Delay High-to-Low Input1 (x10mS) | R/W | 3,6,16 | 114 | 40115 | uint16 | 0 | 0 to 65535 |
| Counter mode Input2 | R/W | 3,6,16 | 120 | 40121 | uint16 | 2 | 1=Polling 2=Edge |
| Counter edge Input2 | R/W | 3,6,16 | 121 | 40122 | uint16 | 1 | 1=Rising 2=Falling 3=Both |
| Impulses per real value Input2 | R/W | 3,6,16 | 122 | 40123 | uint16 | 2000 | 0 to 65535 |
| Delay Low-to-High Input2 (x10mS) | R/W | 3,6,16 | 123 | 40124 | uint16 | 0 | 0 to 65535 |
| Delay High-to-Low Input2 (x10mS) | R/W | 3,6,16 | 124 | 40125 | uint16 | 0 | 0 to 65535 |
| Counter mode Input3 | R/W | 3,6,16 | 130 | 40131 | uint16 | 2 | 1=Polling 2=Edge |
| Counter edge Input3 | R/W | 3,6,16 | 131 | 40132 | uint16 | 1 | 1=Rising 2=Falling 3=Both |
| Impulses per real value Input3 | R/W | 3,6,16 | 132 | 40133 | uint16 | 2000 | 0 to 65535 |
| Delay Low-to-High Input3 (x10mS) | R/W | 3,6,16 | 133 | 40134 | uint16 | 0 | 0 to 65535 |
| Delay High-to-Low Input3 (x10mS) | R/W | 3,6,16 | 134 | 40135 | uint16 | 0 | 0 to 65535 |
| Counter mode Input4 | R/W | 3,6,16 | 140 | 40141 | uint16 | 2 | 1=Polling 2=Edge |
| Counter edge Input4 | R/W | 3,6,16 | 141 | 40142 | uint16 | 1 | 1=Rising 2=Falling 3=Both |
| Impulses per real value Input4 | R/W | 3,6,16 | 142 | 40143 | uint16 | 2000 | 0 to 65535 |
| Delay Low-to-High Input4 (x10mS) | R/W | 3,6,16 | 143 | 40144 | uint16 | 0 | 0 to 65535 |
| Delay High-to-Low Input4 (x10mS) | R/W | 3,6,16 | 144 | 40145 | uint16 | 0 | 0 to 65535 |
| All digital inputs binary | R | 3 | 200 | 40201 | uint16 | 0b0000000000000000 to 0b0000000000001111 | |
| Digital Input1 binary | R | 3 | 201 | 40202 | uint16 | 0b0000000000000000 to 0b0000000000000001 | |
| Digital Input2 binary | R | 3 | 202 | 40203 | uint16 | 0b0000000000000000 to 0b0000000000000001 | |
| Digital Input3 binary | R | 3 | 203 | 40204 | uint16 | 0b0000000000000000 to 0b0000000000000001 | |
| Digital Input4 binary | R | 3 | 204 | 40205 | uint16 | 0b0000000000000000 to 0b0000000000000001 | |
| Counter Input1 32-bit | R/W | 3,6,16 | 210 | 40211 | uint32 | ||
| Counter Input2 32-bit | R/W | 3,6,16 | 212 | 40213 | uint32 | ||
| Counter Input3 32-bit | R/W | 3,6,16 | 214 | 40215 | uint32 | ||
| Counter Input4 32-bit | R/W | 3,6,16 | 216 | 40217 | uint32 | ||
| Counter Input1 LOW 16-bit | R/W | 3,6,16 | 220 | 40221 | uint16 | The HIGH 16-bits are zero after writing | |
| Counter Input2 LOW 16-bit | R/W | 3,6,16 | 221 | 40222 | uint16 | The HIGH 16-bits are zero after writing | |
| Counter Input3 LOW 16-bit | R/W | 3,6,16 | 222 | 40223 | uint16 | The HIGH 16-bits are zero after writing | |
| Counter Input4 LOW 16-bit | R/W | 3,6,16 | 223 | 40224 | uint16 | The HIGH 16-bits are zero after writing | |
| Counter Input1 real value | R | 3 | 230 | 40231 | 32-bit float | Counter Input1/(Impulses per real value Input1) | |
| Counter Input2 real value | R | 3 | 232 | 40233 | 32-bit float | Counter Input2/(Impulses per real value Input2) | |
| Counter Input3 real value | R | 3 | 234 | 40235 | 32-bit float | Counter Input3/(Impulses per real value Input3) | |
| Counter Input4 real value | R | 3 | 236 | 40237 | 32-bit float | Counter Input4/(Impulses per real value Input4) | |
| Float test value (MSW) | R | 3 | 840 | 40841 | 32-bit float | -9.9(0xC11E6666) | |
| Float test value (LSW) | R | 3 | 842 | 40843 | 32-bit float | -9.9(0xC11E6666) | |
| Signed integer test value | R | 3 | 844 | 40845 | sint16 | -999(0xFC19) | |
| Signed integer test value (MSW) | R | 3 | 845 | 40846 | sint32 | -99999(0xFFFE7961) | |
| Signed integer test value (LSW) | R | 3 | 847 | 40848 | sint32 | -99999(0xFFFE7961) | |
| Unsigned integer test value | R | 3 | 849 | 40850 | uint16 | 999(0x03E7) | |
| Unsigned integer test value (MSW) | R | 3 | 850 | 40851 | uint32 | 99999(0x0001869F) | |
| Unsigned integer test value (LSW) | R | 3 | 852 | 40853 | uint32 | 99999(0x0001869F) | |
| Discrete inputs | |||||||
| Input1 | R | 2 | 1 | 10002 | bit | 0 or 1 | |
| Input2 | R | 2 | 2 | 10003 | bit | 0 or 1 | |
| Input3 | R | 2 | 3 | 10004 | bit | 0 or 1 | |
| Input4 | R | 2 | 4 | 10005 | bit | 0 or 1 | |
MSW – Most significant word first – (bits 31 … 16), (bits 15 … 0);
LSW – Least significant word first – (bits 15 … 0), (bits 31 … 16);
PDU address – Actual address bytes used in a Modbus Protocol Data unit;
A “NaN” value is returned for unavailable floating-point values (e.g. in case of error);
* The settings will take effect after restarting the device by power off, power on.
Recycling
Recycle all applicable material.
Do not dispose of in the regular household refuse.
Documents / Resources
 |
TERACOM TDI340 S0 Pulse Counter with Modbus RTU Interface [pdf] User Manual TDI340, S0 Pulse Counter with Modbus RTU Interface, S0 Pulse Counter, S0 Pulse, Pulse Counter, TDI340, Counter |
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TERACOM TDI340 S0 Pulse Counter with MODBUS RTU Interface [pdf] User Manual TDI340 S0 Pulse Counter with MODBUS RTU Interface, TDI340, S0 Pulse Counter with MODBUS RTU Interface, Counter with MODBUS RTU Interface, MODBUS RTU Interface, RTU Interface, Interface |
