Omron CS1W-ETN21 operation manual CIO Area Allocations

CIO Area Allocations Section 4-1

4-1 CIO Area Allocations

Offset

The various kinds of data are stored in the offset positions shown in the fol- lowing diagram, from the beginning word in the area for each Unit.

The beginning word n is calculated by the following equation: Beginning word n = CIO 1500 + (25 ⋅ unit number)

n n+1 n+2 n+3 n+4 n+5 n+6 n+7 n+8 n+9 n+10 n+11 n+12 n+13 n+14 n+15 n+16 n+17 n+18 n+19

n+20

n+21

n+22

Bit
15	8	7	0

Unit Control Switch

UDP Socket No. 1 Status

UDP Socket No. 2 Status

UDP Socket No. 3 Status

UDP Socket No. 4 Status

UDP Socket No. 5 Status

UDP Socket No. 6 Status

UDP Socket No. 7 Status

UDP Socket No. 8 Status

TCP Socket No. 1 Status

TCP Socket No. 2 Status

TCP Socket No. 3 Status

TCP Socket No. 4 Status

TCP Socket No. 5 Status

TCP Socket No. 6 Status

TCP Socket No. 7 Status

TCP Socket No. 8 Status

Service Status

Error Status

Socket Service Re-	Socket Service Re-
quest Switches 2	quest Switches 1
Socket Service Re-	Socket Service Re-
quest Switches 4	quest Switches 3
Socket Service Re-	Socket Service Re-
quest Switches 6	quest Switches 5
Socket Service Re-	Socket Service Re-
quest Switches 8	quest Switches 7

Data direction CPU Unit to Ethernet Unit Ethernet Unit to CPU Unit

CPU Unit to Ethernet Unit

Related communications services

Socket Services

(Refer to Operation Manual, Construction of Applications, SECTION 6.)

Mail Function

(Refer to Operation Manual, Construction of Applications, SECTION 2.)

Socket Services

(Refer to Operation Manual, Construction of Applications, SECTION 6.)

FTP Service, etc.

All error conditions

Socket Services

(Refer to Operation Manual, Construction of Applications, SECTION 6.)

n+23

n+24

FINS/TCP Connection Status (Not used.)

Ethernet Unit to CPU Unit FINS Communications

(Refer to SECTION 6 FINS Communications.)

The following items in the diagram can also be checked using software switch settings on the CX-Programmer.

•The status of UDP/TCP sockets 1 to 8 (Opening Flag, Receiving Flag, Sending Flag, Closing Flag, Results Storage Error Flag, Socket Open Flag)

•Service status (FTP status)

•FINS/TCP Connection Status

For explanations of how to use the related communications services listed in the above diagram, refer to the indicated sections.

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