IAI PCON-CB series, Instruction Manual

Page: 235 / 336

Chapter 9
Troubleshooting
POWER CON
PCON-CB/LC
221
9.2.4 Impossible Communication
Situation Possible cause Check/Treatment
• Not connectable with
host machine
1) Communication rates do not match.
2) The machine number (station
number) is set to be duplicate with
that of another unit or out of the
range.
3) Parameter No.17 “Minimum delay
time for slave transmitter activation”
is set incorrectly.
4) Poor wiring or disconnection of
communication cable
1) Set the communication rate to
match that of the host machine.
[Refer to the Instruction Manual
of the host unit.]
2) Correct the unit number
(station number) setting.
Machine numbers (station
numbers) vary depending on
communication modes. Refer to
the Instruction Manual of each
communication mode.
(Note 1)
3) Set the value in Parameter
No.17 smaller (2 as a
reference) if the response
timeout error is being issued in
the host system. In any other
cases, increase or decrease
the value at will to change the
send/receive timing. (If the
operation is performed
properly, the transmission cycle
of the host is too fast. Always
check the response of PCON
before next transmission.)
4) Review the wiring again. Check
if termination resistances are
connected to network terminals
with correct values.
Note 1 Refer to the following Instruction Manual for communications:
• RS485 ································Section 10.1
• DeviceNet ·····························Separate volume, DeviceNet Instruction Manual
• CC-Link ································Separate volume, CC-Link Instruction Manual
• PROFIBUS-DP·······················Separate volume, PROFIBUS-DP Instruction Manual
• CompoNet·····························Separate volume, CompoNet Instruction Manual
• MECHATROLINK-
Ⅰ
/
Ⅱ
············Separate volume, MECHATROLINK-
Ⅰ
/
Ⅱ
Instruction Manual
• MECHATROLINK-
Ⅲ
················Separate volume, MECHATROLINK-
Ⅲ
Instruction Manual
• EtherCAT ······························Separate volume, EtherCAT Instruction Manual
• EtherNet/IP····························Separate volume, EtherNet/IP Instruction Manual
• PROFINET IO ························Separate volume, PROFINET IO Instruction Manual