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Seneca K107A Quick Start Manual

Half-duplex rs485 serial bus with 3-point insulation
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K107A / K107B
EN
Half-duplex RS485 serial bus with 3-point insulation
General Description
The K107A and K107B modules are half duplex serial buses with 3-point insulation.
Although both modules feature:
Timed automatic direction switching.
Communication speeds that can be configured by dip-switch,
They differ in the type of interface present on the X side:
K107A: RS485
K107B: RS232B
Technical features
Power supply features
Power-supply :
Consumption :
X-side port characteristics
Type:
Capacity:
Terminator:
Protection:
Y-side port characteristics
Type:
Capacity:
Terminator:
Protection:
19,2..30 Vdc
max 22 mA at 24 Vdc
under normal operating conditions.
K107A :RS485, K107B: RS232B
32 standard nodes for K107A
Yes for K107 A, No for K107B
Up to 30 Vdc
RS485 half-duplex
32 standard nodes
Yes
Up to 30 Vdc
MI00101-4-EN
ENGLISH - 1/8

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Summary of Contents for Seneca K107A

  • Page 1 K107A / K107B Half-duplex RS485 serial bus with 3-point insulation General Description The K107A and K107B modules are half duplex serial buses with 3-point insulation. Although both modules feature: Timed automatic direction switching. Communication speeds that can be configured by dip-switch,...
  • Page 2 Signal transmission/processing characteristics Handshake : Timed automatic Insulation : Optical Speed : 1200...115200 bps Configuration : by dip-switch Other functions available : X or Y side terminator, X->Y or Y->X communication direction inhibition General Technical Features Insulation voltage : 1.5 kV between each pair of ports Protection : IP20 Environmental conditions :...

  • Page 3: Description Of Operation

    Description of operation The device usually stays with both its communication ports in reception state (idle status); the first transition (character) detected at one of the ports enables the corresponding communication channel, while the opposing port becomes the data outlet by repeating the stream (data flow) received on the first. Whenever the data flow is interrupted, after a period of time depending on the communication speed set, the device returns to its previous state of reception on both ports (idle status).The time for return to idle status is usually around 1.5 characters starting from the reception line's...

  • Page 4: Dip Switch Settings

    4800 2400 1200 Y->X DIRECTION INHIBITION Enabled Disabled X Terminator (only for the K107A) Enabled Disabled Polarizer * (only for the RS232 of the K107 B) Enabled Disabled * When installed, the polarizer prevents the RS232 line from capturing noise when left...

  • Page 5: Installation Rules

    Installation rules This module has been designed for assembly on a DIN 46277 rail. Assembly in vertical position is recommended in order to increase the module's ventilation, and no raceways or other objects that compromise aeration must be positioned in the vicinity. Do not position the module above equipment that generates heat;...

  • Page 6: Electrical Connections

    Electrical Connections The module has been designed for spring-type terminal electrical connections. Proceed as follows to make the connections: 1 - Strip the cables by 0.8 mm 2 - Insert a screwdriver in the square hole and press it until the cable lock spring opens. 3 - Insert the cable in the round hole.
  • Page 7 K107A Serial port electric connections X-side serial port: Y-side serial port: half-duplex RS485 half-duplex RS485 Y SIDE Y SIDE X SIDE X SIDE POWER POWER SUPPLY SUPPLY The use of screened cables is always recommended, and especially whenever the length of the connections is greater than 3 m.
  • Page 8 This document is property of SENECA srl. Duplication and reprodution are forbidden, if not authorized. Contents of the present documentation refers to products and technologies described in it. All technical data contained in the document may be modified without prior notice Content of this documentation is subject to periodical revision.

This manual is also suitable for:

K107b

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