EMBRON Hatteland Technology HTC03 AC Series, Руководство пользователя

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Specifications - NMEA / IEC COM Module RS-422 / RS-485
PCA200828-1
47
IND100129-263
SPECIFICATIONS
Note: All specifi cations are subject to change without prior notice!
Please visit www.hattelandtechnology.com for the latest electronic version.
2/2
2/4
Forced TX
On (D)
Forced TX
On (C)
Forced TX
On (B)
Forced TX
On (A)
No Echo(A) No Echo (B) No Echo (C) No Echo (D)
Please note:
- By standard factory default, all of the jumpers on all channels are set to open
(no jumper), except some customized models as per request.
- It is expected that the user has the required knowledge for working with PCB Cards,
electronics and setting jumpers.
- To avoid voiding warranty, please contact us prior to ordering to ensure safe and correct
configuration regarding ECHO in factory.
- Incorrect setting of these jumpers can cause strange data losses/corruption which are
hard to debug in software.
There are 2 jumpers for each channel (physically they are located as A,B,D,C as indicated
below). You will have to provide suitable 2mm jumpers (not part of any delivery)
See illustration showing internal PCB card.
Forced TX(x):
If this jumper is set it will enable the RS485 transmitter for channel X at all times. It can be
useful when the end user need the transmitter to remain on at all times. Note that it is only
possible to use one transmitter on the bus when this jumper is set. It will force the bus to
a logic high state when there is no traffic. Power consumption is increased if this jumper is
set since the termination resistor always see the full output voltage.
No ECHO(x) - NOTE: Required for some MODBUS Compability.
Jumper mounted: This setting is only to be used during half duplex communication. When
this jumper is set it will disable ability to receive data (Echo of transmitted data) while
transmitting is active. Some software libraries are not able to use echo and therefore need
this jumper set. Typically example is a very common MODBUS library.
Jumper open (no jumper): Recommended setting. All data sent on the bus is read back and
the application/driver on the computer can check that we were able to send the data onto
the bus.
Isolation:
This only apply to the module in itself, the internally mounted units are most likely less
isolated due to cable/connectors used.
Jumper Configuration:
Users who needs to open the unit set jumper settings will VOID THE WARRANTY!
Before opening, proper ESD measurements must be taken!
1. Operator should ground himself by using a wrist band.
2. The wrist band should be connected to ground via a ground cord.
3. A one megaohm resistor, installed in the wrist connection end of the ground cord, is a safety requirement.
4. Hatteland Technology recommend using a Static-dissipative ESD work mat positioned at the workplace. The 3M™ 8501 Portable Field Service Kit
is a good choice for this purpose. Make sure that the mat, operator and product are wired/grounded together.
All assisting persons who might come into contact with the endangered boards must also use the ESD equipment.
CAUTION
This unit contains electrostatic sensitive devices.
Observe precautions for handling.
Jumper Locations (top view)
2 x Terminal Block 5-pin rows
(MC 1,5/ 5-STF-3,81)