YORK Refrigeration, ControlsJens Juuls Vej 28, 8260 Viby J, DenmarkPhone +45 86 28 79 11, Fax +45 86 28 71 44

CVR No 10301491 F:\SABROE CONTROLS GROUP\IVH\COMSAB II PLC DRIVER DOKUMENTATION KOPI AF\SIEMENS S5.DOC

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Comsab Driver for Siemens PLC Type S5

1 HardwareSiemens PLC 115U, CPU 941, 942, 943CP 523 card, 6ES5 523-3UA11

Please note:- for 135U the CPU 928B is used + RS232 insert module- for 115U the CP 523 card is used

2 FunctionIn DB100 is keyed in how many values that are wanted read/written in the connectedcompressors. The compressors are keyed in succession: 1-2-3-4 etc. and no holesmust occur. Each compressor has its own DB (DB70 DB83). Here is keyed in thewanted values to be read/written (HEX-number, see York Comsab II manual).Further, the values that are wanted transferred to the compressor are keyed in.

Max 14 compressorsMax 29 reading points per compressorMax 10 writing points per compressor

3 DBes for compressorsDB 70 (compressor 1)DB 71 (compressor 2)DB 72 (compressor 3)DB 73 (compressor 4)-----DB 83 (compressor 14)

4 Grouping of the DBes for the compressorsDW 1: Hex. number for the wanted points in Comsab to be read (see

Comsab II manual read list)DW 2: -: -: -: DW 29:

DW 50: Answer from Comsab (integer KF)Answer is multiplied by a factor 10.

DW 51: -: -: DW78:

YORK Refrigeration, ControlsJens Juuls Vej 28, 8260 Viby J, DenmarkPhone +45 86 28 79 11, Fax +45 86 28 71 44

CVR No 10301491 F:\SABROE CONTROLS GROUP\IVH\COMSAB II PLC DRIVER DOKUMENTATION KOPI AF\SIEMENS S5.DOC

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Answer from question in DW 1 is read in DW 50.Answer from question in DW 2 is read in DW 51 etc.

DW 100: Hex number for the wanted points in Comsab to be written to.DW 101: -: -: DW 109:

DW 150: Value for Comsab (Integer KF)Value must be multiplied by a factor 10.

DW 151: -: -: DW 159:

Value in DW 150 belongs to DW 100.Value in DW 151 belongs to DW 101 etc.

5 Example of keying into DB1005.1

DW 1: KF +10 (read 10 points in compressor 1)DW 31: KF +3 (write 3 points in compressor 1)

DW 2: KF +12 (read 12 points in compressor 2)DW 32: KF +2 (write 2 points in compressor 2)etc.

In generalDW 1 DW 14 reading point number for compr. 1

14DW 31 DW 44 writing point number for compr. 1

14

If the contents in one of these data words = 0, then the driver restarts from 1.

5.2 Example for compressor 2Number of values that is to be read/keyed into DW 2 and number of valuesthat is to be written/keyed into DW 32.

Read 5 values + write 2 values in compressor 2:DW 2: KF + 5, DW 32: KF + 2

Example for compressor 4Read 4 values in compressor 4:

DW 4: KF + 4, DW 34: KF + 0

5.3 If a compressor is not connected to the systemthen write KF + 0 in the belonging DW

YORK Refrigeration, ControlsJens Juuls Vej 28, 8260 Viby J, DenmarkPhone +45 86 28 79 11, Fax +45 86 28 71 44

CVR No 10301491 F:\SABROE CONTROLS GROUP\IVH\COMSAB II PLC DRIVER DOKUMENTATION KOPI AF\SIEMENS S5.DOC

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6. Examples of keying into DB for compressor

6.1 Compressor 7wants to read A: Oil temperature (22 H)

B: Suction temperature (20 H)

To ComsabDB 76 DW 1 KH 26 22

DW 2 KH 26 20

From ComsabDB 76 DW 50 KF value (oil temperature)

DW 51 KF value (suction temperature)

6.2 Compressor 3Wants to write A: set point 1 Suction pressure (2FH)

B set point 2 Suction pressure (3OH)

To ComsabDB 72 DW 100 KH 22 2F

DW 101 KH 22 30

DW 150 KF 234 (-23.4 C)DW 151 KF 325 (- 32.5 C)

The values in DW 150 and DW 151 are transferred to Comsab.

7. Cable

Comsab II Siemens PLC (CP 523)No connec. Screen 1Pin no. 8 (Rx) - 11Pin no. 2(Tx) - 5Pin no. 1(Gnd) - 21

-

Plug (9 pole) (25 pole)

Comsab Driver for Siemens PLC Type S5HardwareFunctionDBes for compressorsGrouping of the DBes for the compressorsExample of keying into DB100To ComsabTo Comsab

Comsab IINo connec.Pin no. 8 (Rx)Pin no. 2(Tx)Pin no. 1(Gnd)