AMCI RBE2-8, User Manual

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D
ATA
F
ORMATS
RBE2-8 User Manual
ADVANCED MICRO CONTROLS INC.
16
Input Data Format
Figure R2.2 below shows the format of the network input data.
Figure R2.2 Input Data Format
Word 1 Input Bits
Bit 14: Heartbeat Bit –
This bit will change state approximately every 500 milliseconds. Monitor this bit to
verify that the unit and network connection are operating correctly.
Bit 13: Output Mode State Bit –
This bit reports the present state of the Output Mode toggle. If this bit
equals “1”, the outputs are forced off, regardless of the state of their control bits in Output Word 0. If
this bit equals “0”, then the outputs are controlled by the state of their control bits in Output Word 0.


The state of this bit is controlled by the Output Mode momentary pushbutton. See bullet

of figure
R1.1 on page 8 for location of this pushbutton and its LED. Note that this bit is reset on power up or
when the RBE2-8 board is reset by the Reset Module momentary pushbutton.
Word 0 Input Bits
Bits 07- 00:Relay Fault Bits –
The low power input circuit of each relay is monitored for fault conditions.
Each relay has a fault bit associated with it. The associated bit equals “0” when the corresponding relay is
functioning normally. The associated bit equals “1” when the corresponding relay has a fault. Table R2.1
below lists the fault states based on the state of the Output_K’n’ bit and the Fault_’n’ bit. (‘n’ = 1 to 8.) This
table assumes that the Output Mode State bit (Input Word 1, bit 13) equals “0”.
Table R2.1 Multi-Word Format Examples
1) The monitoring circuit only monitors the state of the circuit that drives the low power input
circuit of the relay. Due to the required opto-isolation of the relay, the high power drive cir-
cuit of the relay cannot be monitored.
2) Open circuit faults are always detected. Shorts to ground or the 24Vdc supply can only be
detected when the relay is driven low or high with the Output_K’n’ control bit. In the case
of a short to ground, the fault bit will be off when you command the relay to turn on. The
fault bit will turn on when you command the relay to turn off.
EtherNet/IP
PROFINET
Word
Modbus TCP
Register
Bit Number
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0 0 0
Fau
lt_
8
Fau
lt_
7
Fau
lt_
6
Fau
lt_
5
Fau
lt_
4
Fau
lt_
3
Fau
lt_
2
Fau
lt_
1
1 1
0
He
ar
tb
ea
t
Ou
tp
ut
Mod
e
0 0 0 0 0 0 0 0 0 0 0 0 0
Fault_’n’
State
Output_K’n’
State
Description
0 0 No fault detected, the relay is off.
0 1 No fault detected, the relay is on.
1 0
A fault is detected. The fault is an open circuit, or a short to
ground. Replace the relay to try to fix the problem.
1 1
A fault is detected. The fault is an open circuit, or a short to
the 24Vdc supply. Replace the relay to try to fix the problem.