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Allocated CIO Area Words Section 3-2
06 Master
Enable
Switch
OFF→
ON
User Enables master communications. (The Unit automati-
cally restarts.)
Once enabled, the Unit will function as a Master
regardless of whether the power is turned OFF and
back ON again until the Master Stop Switch (word n, bit
07) is turned ON.
Note 1. Master communications are enabled in the
default settings.
2. If this bit is turned ON with master communi-
cations enabled, a Unit status error will occur
and a C2 error will be displayed on the 7-
segment display. The 7-segment display will
go out automatically after 30 seconds.
Pro-
gram
mode
Dis-
abled
--- Master
enabled
OFF Unit Returns to OFF at the start of master communications.
07 Master
Stop
Switch
OFF→
ON
User Stops master communications. (The Unit automatically
restarts.)
Turn this switch ON if the Unit will be used only for
slave communications.
Pro-
gram
mode
En-
abled
---
OFF Unit Returns to OFF after master communications stop.
08 Master
Fixed
Alloca-
tion Set-
ting 1
Switch
OFF→
ON
User Allocates the following words for use when the scan list
is disabled (default setting). (The Unit automatically
restarts.)
• OUT area: CIO 3200 to CIO 3263 (1 word/1 node ad-
dress)
• IN area: CIO 3300 to CIO 3363 (1 word/1 node ad-
dress)
Note The I/O words used with the scan list disabled
are also used with the scan list enabled. (Use
the Scan List Enable Switch (word n, bit 00).)
Pro-
gram
mode
En-
abled
Dis-
abled
Master
Fixed
Alloca-
tion
Setting
1
enabled
OFF Unit Returns to OFF after the fixed allocation areas are set.
09 Master
Fixed
Allocation
Setting 2
Switch
OFF→
ON
User Functions the same as bit 08 to allocate the following
words. (The Unit automatically restarts.)
• OUT area: CIO 3400 to CIO 3463 (1 word/1 node ad-
dress)
• IN area: CIO 3500 to CIO 3563 (1 word/1 node ad-
dress)
Pro-
gram
mode
En-
abled
Dis-
abled
OFF Unit Returns to OFF after the fixed allocation areas are set.
10 Master
Fixed
Alloca-
tion Set-
ting 3
Switch
OFF→
ON
User Functions the same as bit 08 to allocate the following
words. (The Unit automatically restarts.)
• OUT area: CIO 3600 to CIO 3663 (1 word/1 node ad-
dress)
• IN area: CIO 3700 to CIO 3763 (1 word/1 node ad-
dress)
Pro-
gram
mode
En-
abled
Dis-
abled
OFF Unit Returns to OFF after the fixed allocation areas are set.
Bit Name Status Con-
trolled
by
Unit operation Operation condi-
tions
Default
setting
CPU
Unit
oper-
ating
mode
Mas-
ter
func-
tion
Scan
list
sta-
tus