Serial Interface Module : Eh-Sio - Hitachi EHV+ Series Applications Manual

2.9.3 Serial interface module : EH-SIO

Module features
Name
Reset switch
Port 1 RS-232C port
Port 2 RS-232C port
RS-422 / 485 port
Communication setup switch
LED display
Front view Name
LNK WDE MDE CDE
SD1 RD1 SD2 RD2
MB1 HP1 MB2 HP2
MS1 MS2 422
SERIAL I/O EH-SIO
Reset switch
RS-232C connector (Port 1)
RS-232C connector
RS-422/485 connector
Communication setup switch
The module is reset if this switch is pressed.
Connects a transmission channel of RS-232C.
Connects a transmission channel of RS-232C.
Connects a transmission channel of RS-422 / 485.
Sets specifications of communication with external devices. Set the module correctly after
confirming the specification of communication of the external device. Turn off the power
supply and remove the module from the base to set it.
LNK Lights up in the simple data link mode.
Lights up when microcomputer error (serious error) occurs. (Common to port 1 /
WDE
port 2)
MDE Lights up when module error (serious error) occurs. (Common to port 1 / port 2)
Lights up when error (warning) such as command error occurs. (Common to port
CDE
1 / port 2)
SD1 Flashes while data is transmitted from port 1.
RD1 Flashes while port 1 receives data.
MB1 Lights up when Modbus-RTU is set in port 1.
HP1 Lights up when H-protocol is set in port 1 (not available with EHV+).
MS1 Lights up when Modbus-RTU master is set in port1.
SD2 Flashes while data is transmitted from port 2
RD2 Flashes while port 2 receives data.
MB2 Lights up when Modbus-RTU is set in port 2.
HP2 Lights up when H-protocol is set in port 2 (not available with EHV+).
MS2 Lights up when Modbus-RTU master is set in port2.
422 Lights up when RS-422/485 is set in port 2.
Type (Weight) EH-SIO (Approx. 0.13kg (0.29lb.))
Dimensions
(mm (in.))
30 (1.18)
Port 2
(selectable)
Description
Details
2 – 77
Chapter 2 Specifications
95 (3.74)
Color
Green
Red
Red
Red
Green
Green
Green
Green
Green
Green
Green
Green
Green
Green
Green