Omron CVM1 Series, Operation Manual

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Replacement Checklists Section 3-6
Checklist 4
Use the following checklist when replacing a 3G2A5-LK003-E with a CVM1-
LK401.
Item Original Unit: 3G2A5-LK003-E Replacement Unit: CVM1-LK401 Remarks
CPU Bus Unit
unit number Not applicable Any unique number in setting range
(Do not set the same unit number on
two CPU Bus Units in a PLC.) Do not mount more PC Link
Units than allowed.
Node
address Check pins 1 to 5: [ ] Set the CVM1-LK401’s node address
to the same node address that was set
on the 3G2A5-LK003-E. (Set the rotary
switches in 2-digit decimal in the range
00 to 07.) The setting range for the
3G2A5-LK003-E’s node
address is 0 to 7.
Check the node address set-
tings on other nodes in the PC
Link to confirm that the same
address is not already taken.
A Unit error will not occur if
the same node address is set
on two PC Link Units in the
same PC Link, but there will
be data errors in the LR Area.
Pins
1 to 5 Node address
XX000 0
XX001 1
XX010 2
XX011 3
XX100 4
XX101 5
XX110 6
XX111 7
Pins 1 and 2 of the front-panel
switch are not used and do not
affect the node address setting.
Number of
LR Bits Check setting on pins 6 to 8:
[ ] Bits / [ ] Units
Set the same number of LR bits that
was set on the 3G2A5-LK003-E. Make the “number of LR bits”
setting on the polling node
(node 0) in the PC Link. The
“number of LR bits” settings
on the other nodes (polled
nodes) are ignored.
When a C500 PLC is replaced
with a CVM1/CV-series PLC,
the maximum number of Units
is double the original value for
the same number of LR bits,
because the LR Area is twice
as large.
Set the level/link number (next
item in table) to single-level
mode.
Pins
6 to 8 LR bits setting Pins 6 to 8 Pin 3 (single-level)
000 256 bits / 2 Units 000 32 bits / 32 Units
001 128 bits / 4 Units 001 64 bits / 16 Units
010 64 bits / 8 Units 010 128 bits / 8 Units
011 011 256 bits / 4 Units
100 100 512 bits / 2 Units
101 101 Invalid setting
110 110
111 111
Level/Link
Number Not applicable. Pins 3 and 4: Set both pins to 1 (single-
level). The 3G2A5-LK003-E supports
only single-level LK003 mode.
Set the replacement CVM1-
LK401 to single-level mode.
Pins 3 and 4 Level/Link Number set-
ting
11 Single-level (Set either
11 or 10.)
10
01 Multi-level Link #1
00 Multi-level Link #0
Transmission
Line Selector Not applicable. WIRE switch: Set to 2 (right). The 3G2A5-LK003-E does not
support optical fiber cable; it
supports only electrical
cables.
4 (left) 4-wire/Use optical fiber
cable.
2 (right) 2-wire/Use electrical
cable.
Terminating
Resistance Check pin 1 of rear-panel switch:
[
1(ON )/0 (OFF)]
TER switch: Set the same setting as
set on the 3G2A5-LK003-E. ---
1 Terminator connected. ON (left) Terminator connected.
0 Terminator not con-
nected. OFF (right) Terminator not con-
nected.
NODE
No.
×
10
1
×
10
0
0
0