low frequency rs485 interfaces
DESCRIPTION
Low frequency RS485 interfaces. J.-D. Chatelain. RWM 1. RWM 2. RWM 3. RWM 4. RWM 2. RWM 3. RWM 4. RWM 1. RWM 1. Interface 1. Interface 2. Interface 3. Power supply. Fieldbus. Reference RxTx(PC) TxRx(PC). 1. 0. RS485 Interfaces - Internal connector. Power supply - PowerPoint PPT PresentationTRANSCRIPT
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©Contrinex 2013 - JDCPPT_LF_Interfaces
Low frequencyRS485 interfaces
J.-D. Chatelain
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Interface 2
RWM 1
RWM 3RWM 2
Power supply
Fieldbus
RWM 1 RWM 4 RWM 2 RWM 3 RWM 4
Interface 1 Interface 3
RWM 1
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DIP
-sw
itch
Ad
dre
ss s
ele
ctio
n
Re
fere
nce
A BRe
fere
nce
Rx
Tx(
PC
)T
xR
x(P
C)
Ou
tpu
t 1
Ou
tpu
t 2
Ou
tpu
t 3
Ou
tpu
t 4
V+
ref
V-r
ef
Diff
eren
tial v
olta
ge
for
Out
puts
5V
÷ R
efer
ence
IN+
IN-
Diff
eren
tial v
olta
ge
for
Inpu
t
GN
DG
roun
d fo
r ho
usin
g
V+
V-
Pow
er s
uppl
yD
iffer
entia
l vol
tage
Sw
itch
RS
23
2
RS
48
5
Re
set
bu
tto
n
01
RS485 Interfaces - Internal connector
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The interface is poweredRWM 2 is correctly connectedAll the possibilities are programed by means of the configuration display or the CF command
There are many possibilities to program the OUTPUTs. One of them is to set the OUTPUT when a transponder is present in front of the corresponding RWM
A transponder is in front of RWM 2There is a communication problem with RWM 2RWM 2 is communicating with the transponderRWM 2 is communicating with the transponderNow, there are transponders in front of RWM 2, 3 and 4
Another possibility is to clear the OUTPUT when a transponder is present in front of the corresponding RWM
RS485 Interfaces - Meaning of the LEDs
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These are the codes obtained when reading the outputs(Command OR)
or the codes entered to force the outputs (Command OW).
00010203040506070809101112131415
RS485 Interfaces - Coding the OUTPUTs
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©Contrinex 2013 - JDCPPT_LF_Interfaces
Low frequencyRS485 interfaces
J.-D. Chatelain
End of this chapter