CEL-MAR ADA-401WA, Руководство пользователя

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Fig 2. View of SW1 micro-switch sections
2.3. APPLICATION
ADA-401WA converter can be used in all kind of local systems based on MicroLAN networks such as: the registration of the
temperature, the monitored access, steering the functioning of air-conditionings of both the heating, the remote control and the
supervision, in alarm, fire systems and the like much moved away from monitoring center. A market of alarm systems is one of most
quickly developing at present markets, which MicroLAN is being used among others for linking in of sensors with the alarm head
office, where in place a few or of a dozen or so wires will only be enough 3. In such applying does MicroLAN prevent the possibility of
cheating through clenching or incising the line and at the same time provides with the alarm system easiness of the automatic
configuration and the reconfiguration of the alarm system during the work. Much also leading test procedures which disabled elements
of the system are helping to eliminate is simpler than in standard solutions.
2.4. MICROLAN – NETWORKS WITH 1-WIRE CHIPS
The creators of 1-WIRE chips of new generation foresee the possibility of building networking systems with their use. With the
standard system of data transmission addressing for 1-WIRE, the protocol used to exchange data is inherently network protocol. The
data transmission addressing lies in the fact that each 1-WIRE chip has a unique, 8-bytes code saved in the internal ROM memory.
The manufacturer guarantees that this code is unique and relevant only to that audio chip.
2.5. CONVERSION OF 1-WIRE TO RS-485 STANDARDS
Because of the fairly complex 1-WIRE protocol, ADA-401WA converter is equipped with a microprocessor, which make easy access to
1-WIRE from a serial RS-485 bus. Communication with device connected to 1-WIRE is sending/receiving the appropriate command
via RS485 interface. Additional description all commands and communication are described in technical documentation DS2480B
driver available on manufacturer web page http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2923 or CEL-MAR .
Additional commands used by ADA-401WA are described in section ADDITIONAL COMMANDS.
2.6. ISOLATION
Converter ADA-401WA has 2-way, 1kV= or 3kV= galvanic isolation (depend on version, described in section VERSIONS).
Fig. 3. Isolation diagram
3. INSTALLATION
This chapter will show how to connect ADA-401WA to PC, RS485/422 bus, 1-WIRE line and power supply and how to use it.
To reduce disturbance from environment, it is recommended to:
–
use multipair type shielded cables, which shield can be connected to the earthing on one end of the cable,
–
use the suitable diameter cable for power supply on account of voltage drop,
–
use the powering cable with a suitable section because of the voltage drops,
–
use the interference eliminators for powering the converter,
–
lay signal cables at a distance of not less than 25 cm away from power cables,
–
not powering the converters form the power-circuit of devices generate large impulse disturbance like contactors, relays, inverters.
3.1. ASSEMBLING
ADA-401WA converter case is adapted to assembly on TS-35 (DIN35) rail. To install converter should mount device on the rail upper
part of the case then press bottom part to hearing characteristic „Click” sound.
3.2. CONNECTION TO PC
ADA-401WA can be connected to RS232 port or USB of PC by the use of additional converter eg. RS232 to RS485 (ADA-1040) or
USB to RS485 (ADA-I9140). The connection is made via RS485 bus or RS422 bus, as on the figure bellow.
5
ADA-401WA
ON
1 2
SW1
POWER SUPPLY
10 - 30VDC
1-WIRE RS485/RS422
2-WAY ISOLATION