2. HOST COMMUNICATION
IMR02F04-E1
5
Connection to the RS-232C port of the host computer (master)
Use a RS-232C/RS-485 converter with an automatic send/receive transfer function.
The cable and termination resistor (s) must be provided by the customer.
RS-485
*R
*R
25
T/R (B)
T/R (A) 26
27
SG
25
T/R (B)
T/R (A) 26
27
SG
(+)
(
)
(+)
(
)
RS-232C/RS-485
converter
T/R (B)
T/R (A)
SG
Host computer
(Master)
RS-232C
PG500 (Slave)
PG500 (Slave)
Screw Size: M3
7 (with 5.8
5.8 square washer)
Recommended tightening torque:
0.4
N
･
m (4 kgf
･
cm)
Recommended solderless terminals:
Manufactured by J.S.T MFG CO.,LTD.
Circular terminal with isolation V1.25-MS3
(M3 screw, width 5.5 mm, hole diameter 3.2 mm)
*R: Termination resistors (Example: 120
1/2 W)
If communication errors occur frequently due to the
operation environment or the communication distance,
connect termination resistors.
Recommended:
CD485, CD485/V manufactured by
Data Link, Inc. or equivalent.
Maximum connections:
Up to 31 instruments
Paired wire
Shielded twisted
pair wire
