Hr531/534 Cards - Mitsubishi Electric MELDAS 60 Series Maintenance Manual

1.12 HR531/534 Cards

[Block diagram]
[Explanation of functions]
The HR53
Ethernet 10BASE-5 and 10BASE-T interface. The I/O link master/slave and slave station Nos. are
set with the rotary switch. The BASE-5/T changeover is set with the slide switch.
This is used only for M64.
The card name for each function is shown below.
Card
name
HR531
A/B/C
HR534
A/B/C
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1. EXPLANATION OF MODULE FUNCTIONS
Comm unication control circuit
Ethernet control cir cuit
card has an M60 Series communication terminal interface, I/O link interface and
AUX1
I/O interface
(Used for operation board
connection)
I/O interface
(Used for operation board
connection)
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1.12 HR531/534 Cards
RS-422
transceiver
RS-422
transceiver
Function
AUX2
I/O interface
(Used in the I/O link)
(Master/slave changeover)
Terminator ON/OFF switch (C only)
I/O interface
(Master/slave changeover)
Terminator ON/OFF switch (C only)
II-21
AUX1
AUX2
10BASE-5
Selec tor
10BASE-T
Ethernet
Not available
10BASE-5/10BASE-T