IAI America REXT - Manual (Page 43)

Part 1 Specification
3.4.5 RS485 SIO
Two modes are available: the Modbus gateway mode in which the unit operates as a Modbus/RTU slave station, and the SIO through
mode in which the unit operates by means of serial communication per the Modbus/RTU and ASCII protocols.
Item
Specification
Modbus gate way mode SIO through mode
Power supply
Current consumption 600 m A max.
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Communication format 1:1 communication connection
conforming to RS485
1:N (1 ≤N ≤16) communication
connection conforming to RS485
Communication method Asynchronous half-duplex
Communication mode Modbus/RTU Modbus /RTU, ASCII
Baud rate [bps] *2 9600 19200 38400 57600 115200 230400 38400 57600 115200 230400
Frame delay time t3.5 Fixed to 1.75 ms t3.5 Fixed to 1.75 ms
Slave address Fixed to 63 (3FH) Axis n umber + 1 (01H to 10H)
Master
ROBON ET
F 600H to F647H
Register address Arbitrary
ROBON ET
Master F 700H to F747H
Read Holding Register (03H) 01H to 07H
Available function codes Preset Single Register (06H) 0FH, 10 H, 11H, 17H
Preset Multiple Register (10H)
Maximum send/receive buffer size 160 byte
Bit length 8 bits
Start bit 1 bit
Stop bit 1 bit
Parity None
Cable length 1000 m max. (master RGW- SIO)
SIO
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Transmission path configuration IAI’s dedicated multi-drop differential communication
Communication method Half-duplex
Synchronization method Start-stop method
Transmission path format Conforming to EIA RS485, 2-wire type
Baud rate 230.4 k [bps]
Error control method No parity bit, CRC *2
Communication cable ROBONET communication connection circuit board (supplied), ROBONET
extension cable (when an extension unit is used)
Number of units that can be connected 16 axes max.
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Ambient operating temperature 0 to 40 ˚C
Ambient operating humidity 95% RH max. (non-condensing)
Operating ambience Free from corrosive gases, flammable gases, oil mist or powder dust.
Storage temperature -
Storage humidity 95% RH max. (non-condensing)
Vibration resistance XYZ directions:
10 to 57 Hz, half amplitude – 0.0 35 mm (continuous) / 0.075 mm
(intermittent)
57 to 150 Hz – 4.9 m/s
2
(continuous) / 9.8 m/s
2
(intermittent)
Impact resistance XYZ directions:
147 mm/s
2
, 11 ms, half-sine wav e pulse
Protection degree I P20
Weight Approx. 140 g
External dimensions [m m] 34 W x 105 H x 73.3 D [mm]
*1: The baud rate is set by the gateway parameter selection tool.
*2: If the host is a PLC, the PLC must have a RS485 or RS232C interface. If a RS232C interface is used, a
SIO converter (RCB-TU-SIO*) is required.
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