
L--740--28--E
1
7.9 Terminal Identification of Separately Mounted Transmitter
Item
Terminal
name
Terminal
No.
Terminal
color
Description
TB20
1AB
BRN
Flow tube drive output
2AB
RED
3AB
BLK
BRN/RED, GRN/WHT, BLU/GRY, PUR/ORG/YEL shielded wires
bundled
TB21
1AB
PUR
Temperature input (inner)
2AB
ORG
Temperature input (outer)
3AB
YEL
Temperature input
4AB
BLU
Right position pickoff sensor input
5AB
GRY
6AB
WHT
Left position pickoff sensor input
7AB
GRN
Se
ns
or
u
ni
t t
o
tra
ns
m
itt
er
in
te
rc
on
ne
ct
c
ab
le
(2
00
m
et
er
s
m
ax
.)
※
※
: Maximum lengths of the cable are: 50m for Type S stainless steel tube type, 100m for
Type S titanium tube type, and 5m for Type B sensors.
NOTE:
Cable specification
Size
Max. cable
length
Impedance
Specific
resistance
Attenuation
Association-
recommended
OVAL-
recommended
Type A
Twisted pair cable
(pair shielded)
18AWG
0.8mm
2
1900m
100
Ω
22
Ω
/km
3dB/km
○
○
Type B
Twisted pair cable
(common shielded)
22AWG
0.32mm
2
1200m
100
Ω
56
Ω
/km
5dB/km
○
Type C
Twisted pair cable
(unshielded)
26AWG
0.13mm
2
400m
no regulation 132
Ω
/km
8dB/km
○
Type D
Straight through cable
(common shielded)
16AWG
1.25mm
2
200m
no regulation
20
Ω
/km
8dB/km
○
○
Recommended cable condition for FOUNDATION Fieldbus and PROFIBUS communication
Source: IEC 61158-2
:
"Digital data communications for measurement and control – Fieldbus for use
industrial control systems – Part 2 : Physical layer specification and service definition"
Cable specification
Size
Max. cable length
Twisted pair
0.75mm
2
1200m (depends on operation environment)
Recommended wire size
Cable packing gum ID.
2sq
1.25sq
0.9sq
0.75sq
Remarks
φ
8.1 to
φ
9.0
2
2
2
2
FOUNDATION Fieldbus,
PROFIBUS PA Communication cable
φ
9.1 to
φ
10.0
2
2
2
2
φ
10.1 to
φ
11.0
2
3, 4
6, 7
6, 7
φ
11.1 to
φ
12.0
3, 4
5
8
8
φ
12.1 to
φ
13.0
5
6
10, 12
10, 12
φ
13.1 to
φ
14.0
6
7, 8
-
-
Recommended cable condition for Modbus communication
Applicable rubber packing size for wire lines and sizes
NOTE: Placeable cable lengths vary depending on actual field conditions. For the details, refer to the
documents listed below:
・
"PROFIBUS PA Technology and Application"
・
FOUNDATION Fieldbus Application Guide AG-140; "Wiring and Installation; 31.25 kbit/s,
Voltage; Model,Wire Medium"
NOTE: Use shreld cables.