Yaskawa MEMOCON GL120 - Manual (Page 223)

4.4 Communications Modules
— 4-167 —
If an error occurs either in the Module or in the Uniwire System, the READY, ERR1, ERR2 and
ERR3 indicators will operate as follows:
Type Error READY ERR1 ERR2 ERR3 Remarks
Module ROM error Not lit Lit Not lit Not lit Checked when power
i d ON error
RAM error Not lit Not lit Lit Not lit
p
is turned ON.
Internal watchdog timer error Not lit Not lit Not lit Lit Checked all the time.
Switch setting error Lit Lit Lit Not lit Checked when power
is turned ON.
Unwire D and V24 short-circuited. Lit Lit Not lit Not lit Checked all the time.
system
error
D and G short-circuited, or D and G
connection reversed.
Lit Not lit Lit Not lit
End Unit error or D line disconnected Lit Not lit Not lit Lit
H-System error Lit Lit Not lit Lit
2. Function
1) The Uniwire (H) I/F is an interface module compatible with the Uniwire System
manufactured by the NKE Corporation to reduce wiring. The Uniwire (H) I/F has the
following main functions.
• Communications with Uniwire System I/O Terminal Units
• Address detection of I/O Terminal Units with errors (for H-System)
• Notification to the CPU Module of information on I/O Terminal Units for which errors
have been detected (for H-System)
2) Interface Function
The Uniwire (H) I/F can be set for either a Normal System or a H-System. Both Normal
System and H-System I/O Terminal Units are available. Contact the NKE Corporation for
details on I/O Terminal Units.
4