Operating Instructions
Model 100E Instruction Manual
90
045150102 Rev XB1
6.8. Digital Inputs and Outputs
6.8.1.
Status Outputs
The status output signals report analyzer conditions through optically isolated transistors
which can sink up to 50 mA of DC current to ground. These outputs can be used with
interface devices that accept logic-level digital inputs, such as programmable logic
controllers (PLC).
NOTE
Most PLCs have internal provisions for limiting the current that the input will
draw from an external device. When connecting the M100E status outputs to a
unit that does not have this feature, external pull-up resistors must be used to
limit the current through the individual transistor outputs to 50 mA or less
(120
Ω
for 5V supply). Refer to motherboard schematic 04069 in Appendix D.
The status outputs are accessed through a 12 pin connector on the analyzer’s rear panel
labeled STATUS (see Figure 6-4).
Co
nn
ect to
In
te
rn
al
Gr
ound o
f Mon
itor
in
g
STATUS
1 2 3 4 5 6 7 8 D
+
SY
S
T
E
M
O
K
HIGH RAN
GE
CONC V
A
LI
D
ZE
R
O
CA
L
S
P
A
N CA
L
DIA
G
NOS
T
IC M
O
DE
LOW
SP
A
N
Figure 6-4: Status Output Connector
Summary of Contents for 100E
Page 2: ...Model 100E Instruction Manual ...
Page 4: ...Model 100E Instruction Manual ii 045150102 Rev XB1 ...
Page 12: ...Model 100E Instruction Manual x 045150102 Rev XB1 ...
Page 20: ...M100E Documentation Model 100E Instruction Manual 18 045150102 Rev XB1 User Notes ...
Page 26: ...Specifications Approvals and Warranty Model 100E Instruction Manual 24 045150102 Rev XB1 ...
Page 46: ...Getting Started Model 100E Instruction Manual 44 045150102 Rev XB1 User Notes ...
Page 128: ...Operating Instructions Model 100E Instruction Manual 126 045150102 Rev XB1 User Notes ...
Page 156: ...EPA Protocol Calibration Model 100E Instruction Manual 154 045150102 Rev XB1 ...