Omron H7EC Manual page 58

I Communications Specifications
Transmission path connections
Communications method
Synchronization method
Baud rate (See note.)
Transmission code
Data bit length (See note.)
Stop bit length (See note.)
Error detection (See note.)
Flow control
Interface
Retry function
Communications buffer
Reading and writing from H8GN
Note: The baud rate, data bit length, stop bit length, and vertical parity can be individually set using the communications setting level.
I Life-test Curve (Reference Values)
Resistive Load
1,000
700
500
300
30 VDC (cosφ = 1)
250 VAC (cosφ = 1)
100
70
50
0 1 2
Connections
I Block Diagram
C-64
Preset Counter/Timer
Multidrop
RS-485 (two-wire, half duplex)
Start-stop synchronization
1,200/2,400/4,800/9,600 bit/s
ASCII
7 or 8 bits
1 or 2 bits
Vertical parity (none, even, or odd) (See note.)
Block check character (BCC)
Not supported.
RS-485
Not supported.
40 bytes
Reading present value and totalizing count value; reading/writing preset and set values; switching be-
tween SV-banks; switching between communications write-enabled/write-prohibited; reading/writing
other initial and advanced function setting parameters
3 4
Load current (A)
Communications
circuit
(Functional
insulation)
Input circuit
H8GN
Reference: A maximum current of 0.15 A can be switched at
125 VDC (cosφ = 1) and a maximum current of 0.1 A can
be switched if L/R is 7 ms. In both cases, a life of
100,000 operations can be expected. The minimum
applicable load is 10 mA at 5 VDC (failure level: P).
(Basic
Output circuit
insulation)
(Basic
insulation)
Display circuit
Internal
control circuit
Key switch
circuit
Power supply
circuit