Yokogawa EXA PH202 2-Wire pH/ORP Analyzer - Manual (Page 127)

IM 12B07D02-01E
Appendix 12-15
3/3
QIS 12B07D02-71E
3.6 Profibus Communication Functional Check
Check for normal function using Profibus equipment specified by Yokogawa.
In the tests of Item 3.3 to 3.5, check the communication function using Profibus communication.
PH202
+ – G 11 12 14 17 13 LOW IMP
- +
Decade
Resistance Box
Standard
Voltage Source
Shorting Bar
Profibus Equipment Specified by YOKOGAWA.
C R
C R
R=50 １ Ω± Ω
C=2μF±0.4μF
SUPPLY
TEM
P
LE
HIGH IMP 15 16
INPUT2 INPUT1
Ground
+
–
DA/PA Coupler
DC
Source
24VDC
Figure 1 Testing Circuit and Test Equipment