Modbus & Serial
Output Transmitter
for Time Interval of Periodic Events
From
from 1 µs to 199.999 s. Resolution to 0.2 µs.
DIN Rail mounted, digitally
programmable.

Standard Features
-
Selectable Modbus or Laurel ASCII
protocol.
- Modbus
RTU or ASCII modes, 2-wire connection,
up to 247 digital addresses.
- For periodic events with
width from 1 µs to 199.999
s
- Transmitted 6-digit decimal reading
- Resolution to 0.2 µs
-
Rep rated to 250 kHz
- Inputs from NPN or PNP proximity
switches, contact closures, digital logic, magnetic pickups down to 12 mV, or AC inputs up
to 250 Vac
- Trigger on positive or negative pulse
edges
- DIN rail mount package only 22.5 mm thick
- Plug-in screw-clamp connectors
- Easy setup with PC-based Instrument Setup Software
- 5V, 10V or 24V dc sensor excitation
output, isolated
- Dual solid state relays for alarm or control,
isolated
- 0-10V, 4-20 mA or 0-20 mA analog output,
isolated
- Universal AC power, 85-264 Vac
- Priced at only $235
(basic time interval transmitter)
Options:
- Low voltage
power, 10-48 Vdc or 12-32 Vac
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Description
The
Laureate
Modbus & serial output, time interval input transmitter can transmit pulse width or time delay between individual pulses to a
resolution of 0.2 µs for periodic events. It can also transmit average pulse width or average time delay between multiple
pulses.
Time interval is measured
between inputs on channels A and B. Timing starts when a pulse is applied
to Channel A (selectable positive or negative edge), and ends when a pulse is
applied to Channel B (selectable positive or negative edge). In case of a single pulsed
signal, the A and B inputs can be tied together. A positive or negative slope may be
selected to start timing, and the opposite slope must be selected to stop timing.
Timing is achieved by counting 5.5 MHz clock pulses. Multiple integral
time intervals are averaged over a gate time which is selectable from 10
ms to 199.99 s and also controls the maximum output rate.
The dual-channel signal
conditioner used for pulse detection accepts inputs from proximity switches with PNP or NPN output, TTL or CMOS logic, magnetic pickups, contact closures, and other signals from
12 mV to 250 Vac. Jumper selections
provide optimum operation for different sensor types and noise
conditions. A built-in 5V, 10V or 24V dc
excitation supply can power proximity switches and other sensors, and eliminate the need
for an external power supply.
LTM Series serial
output transmitters send data via an isolated serial port, which is user
configurable for RS232 or RS485 and full or half duplex operation. Three
protocols are user selectable: Modbus RTU, Modbus ASCII, or Laurel ASCII. Modbus operation
is fully compliant with Modbus Over Serial Line Specification V1.0 (2002).
The Laurel ASCII
protocol allows up to 31 Laureate devices to be addressed on the
same RS485 data line. It is simpler than the Modbus protocol and is
recommended when all devices are Laureates. It also allows use of
Laurel Datalogging Software.
Standard features of Laureate transmitters include:
- Serial data output, isolated. User selectable RS232 or RS485, half or full duplex, Modbus or
Laurel ASCII protocol.
- Dual solid state relays for control or alarm, isolated.
Rated 120 mA at 130 Vac or 170 Vdc.
- Transducer excitation output, isolated. User selectable 5V@100 mA, 10V@120 mA or 24V@50
mA.
-
Analog transmitter output, 16-bit, user scalable and isolated. User selectable 4-20 mA,
0-20 mA or 0-10V levels.
- Universal AC power supply for 85-264 Vac.
Easy Transmitter programming is via
Laurel's Instrument Setup Software,
which runs on a PC under MS Windows. This software can be downloaded from this website at no charge. The required transmitter-to-PC interface cable is available from
Laurel (P/N CBL04).
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Specifications
Laureate Modbus & Serial Output Transmitter
for Time Interval of Periodic Events
|
Pulse Input |
|
Types
Ch A Frequency, Max
Ch B Frequency, Max
Signal Ground
Minimum Signal
Maximum Signal
Maximum Frequency
Contact Debounce
Time
Base Accuracy
Span Tempco
Long-term Drift |
AC,
pulses from NPN, PNP transistors, contact closures,
magnetic pickups.
1 MHz.
250 kHz.
Common ground for channels A & B
Nine ranges from (-12 to +12 mV) to (+1.25 to +2.1V)
250 Vac
1 MHz, 30 kHz, 250 Hz (selectable)
0, 3, 50 ms (selectable)
Quartz crystal calibrated to ±2 ppm
±1 ppm/°C (typ)
±5 ppm/year |
|
Time Interval Mode |
|
Timing Start
Timing Stop
Periodic Timing Interval
Gate Time
Time Before Zero Output |
Channel
A pulse, + or - edges
Channel B pulse, + or - edges
Gate time + 30 ms + 0-2 time intervals
Selectable 10 ms to 199.99 s
Selectable 10 ms to 199.99 s |
|
Resolution |
|
0 - 199.999 s
0 - 99.9999 s
0 - 9.99999 s
0 - .999999 s
0 - .099999 s
|
1
ms
100 µs
10 µs
1 µs
0.2 µs (after averaging) |
|
Serial Data Output
(standard) |
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Signal levels
Data Rates
Output Isolation
Serial Protocols
Devices on RS48 Line
Modbus Addresses
Modbus Modes
Modbus Compliance |
RS232 or RS485 (half duplex)
300, 600, 1200, 2400, 4800, 9600, 19200 baud
250V rms working, 2.3 kV rms per 1 min test
Modbus RTU, Modbus ASCII, Laurel ASCII (selectable)
32 max without a repeater.
247 max
RTU or ASCII, 2-wire.
Modbus over Serial Line Specification V1.0 (2002). |
|
Transducer Excitation Output (standard) |
|
Output Levels
Output Isolation |
5V@100 mA, 10 @120 mA, 24V@50 mA (jumper
selectable)
50V from signal ground |
|
Dual Relay Output (standard) |
|
Relay Type
Load Rating |
Two solid state relays, SPST, normally open,
Form A
130 mA at 140 Vac or 180 Vdc |
|
Analog Output (standard) |
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Output Levels
Compliance, 4-20 mA
Compliance, 0-10V
Output Resolution
Output Accuracy
Output Isolation |
4-20 mA, 0-20 mA, 0-10 Vdc (jumper selectable)
10V ( 0-500 ohm load )
2 mA ( 5 kOhm load or higher)
16 bits (65,536 steps)
0.02% of output span
250V rms working, 2.3 kV rms per 1 minute test |
|
Power Input |
|
Standard Power
Low Power Option
Power Frequency
Power Isolation
Power Consumption |
85-264 Vac or 90-300 Vdc (DC operation not UL
approved)
10-48 Vdc or 12-32 Vac
DC or 47-63 Hz
250V rms working, 2.3 kV rms per 1 min test
2W typical, 3W with max excitation output |
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Mechanical |
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Dimensions
Mounting
Electrical Connections |
120 x 101 x 22.5 mm
35 mm rail per DIN EN 50022
Plug-in screw-clamp connectors |
|
Environmental |
|
Operating Temperature
Storage Temperature
Relative Humidity
Cooling Required |
0°C
to 55°C
-40°C to 85°C
95% at 40°C, non-condensing
Mount transmitters with ventilation holes at top and bottom.
Leave 6 mm (1/4") between transmitters, or force air with a fan. |

|
Typical Applications |
Time Interval Mode for Time Delay |
 |
For periodic pulses applied to A and B channels, time
delays can be measured down to 0.2 µs resolution from the rising or falling edge of A to
the rising or falling edge of B (selectable).
|
Time Interval Mode for Pulse Width |
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The width of periodic pulses (t1 or t2) can be measured by
tying the A and B channels together. As for time delay, readings are averaged over a
user-selectable gate time. |
Timing Process Dynamics with a Panel Meter and Time
Interval Meter |
 |
The start and stop pulses used for timing can be generated
by the dual relay board in a Laureate panel meter or digital counter. For instance,
the start and stop pulse edges can be created as temperature passes two alarm setpoints,
or temperature cycles in a hysteresis control mode.
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Replacing an Oscilloscope with a Laureate
Time Interval Meter |
 |
An oscilloscope is great for viewing and
timing pulses in a lab. However, in fixed installations where digital
timing accuracy and control outputs are required, a low-cost Laureate time
interval meter will be the instrument of choice. Resolution to 0.2 µs is
feasible. |
Instrumenting a Pulsed Laser System |
 |
Some of the many possibilities in instrumenting a pulsed
laser system with Laureate dual-channel counters and transmitters: elapsed time, number
of pulses, pulse width, pulse separation, duty cycle, and pulse rep
rate.
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Pinout
Laureate Modbus & Serial Output Transmitter
for Time Interval of Periodic Events


Ordering
Guide
Laureate Modbus & Serial Output Transmitter
for Time Interval of Periodic Events
Click on the radio buttons to build a model number with pricing (shown below the Ordering Guide).
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Configured model number |
TA6000FR |
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Configured price per
model |
$235
|
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Quantity |
1 |
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Extended price |
$235 |
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