I/O Unit Interface Status - Omron DEVICENET#05-2003 Operation Manual

Functions
Allocation Precautions
1-2-4

I/O Unit Interface Status

Note the following precautions when starting the DeviceNet Network.
Limits on the Total Number of Input and Output Points for a Master Unit
A maximum of 1,024 inputs and outputs can be controlled by one Communi-
cations Unit (DRT1-COM). The number of I/O points for each node, however,
depends on the Master Unit. For example, with the CV-series Master Unit
(CVM1-DRM21-V1) or the C200HX/HG/HE and C200HS Master Unit
(C200HW-DRM21-V1), up to 512 inputs and up to 512 outputs can be used at
each node. Therefore, connect I/O Units within a range that does not exceed
the number of I/O points for each Master Unit node. The following table shows
the I/O size of each Unit.
Unit model
DRT1-COM
GT1-ID16(-1), GT1-ID16MX(-1), GT1-ID16ML(-1)*,
GT1-ID16DS(-1)*
GT1-OD16(-1), GT1-OD16MX(-1), GT1-OD16ML(-1)*,
GT1-OD16DS(-1)*, GT1-ROS16, GT1-ROP08
GT1-ID32ML(-1)
GT1-OD32ML(-1)
GT1-AD04*
GT1-AD08MX (With 8-input mode)
GT1-AD08MX (With 4-input mode)
GT1-DA04*, GT1-DA04MX
GT1-TS04T, GT1-TS04P (With Normal Mode)
GT1-TS04T, GT1-TS04P (With 2-decimal-place Mode) 128 points
GT1-CT01
The GT1-ROP08 (Relay Output Unit with Power Relay) has 8 actual outputs
but, as a MULTIPLE I/O TERMINAL, the number of outputs allocated to the
Master Unit is 16.
Calculation Example
When one GT1-DA04MX Analog Output Unit and three GT1-AD08 Analog
Input Units are used, the total number of input points and output points is cal-
culated as follows:
Total Number of Input Points:
Communications Unit (Status) + Analog Input Units x 3
= 32 points + 128 points x 3 = 416 points
Total Number of Output Points:
Analog Output Units x 1
= 64 points
Reference
For information on dealing with other problems concerning the MULTIPLE I/O
TERMINAL, refer to SECTION 7 Troubleshooting and Maintenance. For infor-
mation on problems concerning the DeviceNet, refer to DeviceNet Operation
Manual (W267).
The following I/O Unit interface status is maintained in the CPU Unit.
• I/O Unit connection information (I/O Unit interface status)
• Registered I/O Unit addresses
Section 1-2
Number of Number of
inputs outputs
32 points 0 point
16 points 0 point
0 points 16 points
32 points 0 point
0 points 32 points
64 points 0 points
128 points 0 points
64 points 0 points
0 points 64 points
64 points 0 points
0 points
48 points 48 points
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