IAI America REXT User 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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