Related Manuals for Athena 18C Series
Summary of Contents for Athena 18C Series
- Page 1 SERIES 18C/19C/25C TEMPERATURE/ PROCESS CONTROLLER Standard Options and Digital Communications Users Guide...
- Page 2 ©Copyright 2006, Athena Controls, Inc.
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Page 3: Table Of Contents
Athena+ Protocol ........ -
Page 4: Alarm Output
Series 18C/19C/25C Temperature/Process Controller Alarm Outputs 24 Vdc Alarm Output Option T: Alarm Output, N.O. This optional hardware module provides Option S: 24 Vdc Alarm Output alarm drive outputs. LED indicators A1 and Option Description: 24 V output with A2 are used to indicate alarm conditions clamping diodes Source current is as configured in the Alarm Menu. -
Page 5: Relay, N.o. Alarm Output
Series 18C/19C/25C Temperature/Process Controller Relay, N.O. RS-232 Alarm Output Communications Option B: Relay, N.O. Option A: RS-232 (one-to-one) Alarm Output Communications Option Description: NO (Normally open) Option Description: Provides a one-to-one relay contact is closed when either alarm connection between the controller and an is active. -
Page 6: Rs-485 Communications
Series 18C/19C/25C Temperature/Process Controller RS-485 Communications SIG GND RS 232 SIG GND B(-) A(+) RS 485 B(-) A(+) SIG GND Options B&C: RS-485 (one-to-many) Communications Option Description: Provides one-to- many communications. Terminate the controller furthest from the computer by either connecting a 120-ohm, 1/4-watt resistor between terminals 23 and 24.* *Terminate only if the total distance from con-... -
Page 7: Auxiliary Output
Series 18C/19C/25C Temperature/Process Controller Auxiliary Output The sum of the currents for all remote Option PA, PB, PC, and PD: indicators must be less than 10 mA. Auxiliary Output Option Description: The Setpoint Variable or Process Variable is transmitted to a Connect jumper between pins 16 and 17 for options PB and PD remote device (chart recorders, indicators,... -
Page 8: Remote Communications Options
(refer to wiring diagram Athena+ Protocol on next page). The Athena+ Protocol provides an easy way to query and modify controller para- RS-422 meters using a personal computer and the This method allows bidirectional data... -
Page 9: Message Formats
Read Broadcast Requests. Zone This is a two-character ID identifying Message Formats the Zone number in multi-zone capable All Athena+ messages adhere to the controllers. For the 18C/19C/25C, this general format of: number must be 01. [STARTCHAR][ID][ZONE][TYPE][PARAM]... -
Page 10: Sample Commands
Series 18C/19C/25C Temperature/Process Controller Examples of invalid numeric representa- PARAM tions for 6 character data field: (B repre- This is a two-character, message specific, sents a blank, or a space, character) parameter ID. For a Read/ Write Request or Response message, this ID identifies Numeric Bad ASCII Why? - Page 11 Series 18C/19C/25C Temperature/Process Controller READ COMMAND TO CONTROLLER Read Command Controller ID Checksum $0101R01B7<CR> End of Message Start of Message Parameter Number Zone Number READ RESPONSE FROM CONTROLLER Read Command Checksum Data Controller ID %0101R0502.0000J7<CR> Start of Message Parameter Number End of Message Zone Number WRITE COMMAND TO CONTROLLER...
- Page 12 Series 18C/19C/25C Temperature/Process Controller WRITE RESPONSE FROM CONTROLLER Write Command Checksum No Error Controller ID %0101W090H8<CR> Start of Message Parameter Number End of Message Zone Number AUXILIARY COMMAND TO CONTROLLER Auxiliary Command Checksum Data Controller ID $0101A020.0000000067<CR> End of Message Parameter Number Start of Message Zone Number...
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Page 13: Request Messages
Series 18C/19C/25C Temperature/Process Controller Request Messages The Write Request: Request Messages are sent from the host The Write Request is used to modify to the slaves. Each request will have an ID parameter values and it has the following identifying the intended recipient of the message format: [START CHAR][ID] request. -
Page 14: Response Messages
Field Description: For all requests, the Athena+ Protocol TYPE–This field must contain the specifies a maximum response time of 100 uppercase letter ‘A’ milliseconds. If the controller does not start DATA–A ten-character ASCII representation... - Page 15 Series 18C/19C/25C Temperature/Process Controller The Auxiliary Command Response: The Read Response: The Auxiliary Command Response will The Read Response will be sent in be sent in response to an Auxiliary response to a Read Request. Some Command Request. examples: Some examples are: Request Message Description Request Message...
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Page 16: Communications Parameter List
Series 18C/19C/25C Temperature/Process Controller 18C/19C/25C Parameter Codes “X”s mark parameters that are supported by the 18C, 19C, and 25C and “O”s indi- cate parameters that are not supported. Table 1. Communications Parameter List (Athena+ Protocol) Number Name Read Write Data Field Value... - Page 17 Series 18C/19C/25C Temperature/Process Controller Table 1. Communications Parameter List (Athena+ Protocol) Continued Number Name Read Write Data Field Value Process Value Operating Mode 1 - Manual 2 - Standby 3 - Normal (automatic) 4 - Initiate Autotune 5 - Recipe Run...
- Page 18 Series 18C/19C/25C Temperature/Process Controller Table 1. Communications Parameter List (Athena+ Protocol) Continued Number Name Read Write Data Field Value Manual Control Output 1 Percentage Manual Control Output 2 Percentage Output 1 Deadband Output 1 Hysteresis Output 1 Proportional Band Output 2 Proportional...
- Page 19 Series 18C/19C/25C Temperature/Process Controller Table 1. Communications Parameter List (Athena+ Protocol) Continued Number Name Read Write Data Field Value 42-49 Ramp Times 1-8 50-57 Ramp Events 1-8 0 - Disabled 1 - Event 1 On 2 - Event 1 Off...
- Page 20 Series 18C/19C/25C Temperature/Process Controller Table 1. Communications Parameter List (Athena+ Protocol) Continued Number Name Read Write Data Field Value Upper Setpoint Limit Input Filter Input Type 0 - B Thermocouple 1 - C Thermocouple 2 - E Thermocouple 3 - J Thermocouple...
- Page 21 Series 18C/19C/25C Temperature/Process Controller Table 1. Communications Parameter List (Athena+ Protocol) Continued Number Name Read Write Data Field Value Output 1 Type 1 - Inactive/Disabled 2 - PID 4 - On/Off Output 1 Action 1 - Direct 2 - Reverse...
- Page 22 Series 18C/19C/25C Temperature/Process Controller Table 1. Communications Parameter List (Athena+ Protocol) Continued Number Name Read Write Data Field Value Display Blanking Alarm 1 Action 1 - Off 2 - Normal 3 - Latched 4 - Event Alarm 1 Operation 1 - Process High...
- Page 23 Series 18C/19C/25C Temperature/Process Controller Table 1. Communications Parameter List (Athena+ Protocol) Continued Number Name Read Write Data Field Value Alarm 2 Delay Alarm 2 Inhibit Alarm 2 Process Setpoint Alarm 2 Deviation Setpoint Communications Protocol 1 - Athena + Communications ID...
- Page 24 Series 18C/19C/25C Temperature/Process Controller Table 1. Communications Parameter List (Athena+ Protocol) Continued Number Name Read Write Data Field Value Communications Transmit Delay Output 1 Failsafe % Output 2 Failsafe % Loop Break Time Highest Reading Lowest Reading Option Selection 1 - Comm Option...
- Page 25 Series 18C/19C/25C Temperature/Process Controller Table 1. Communications Parameter List (Athena+ Protocol) Continued Number Name Read Write Data Field Value Autotune State 0 - Success 1 - Aborted 2 - Error: No PID Output 3 - Error: No Deviation 4 - Error: No Output...
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Page 26: Auxiliary Commands
Series 18C/19C/25C Temperature/Process Controller Make sure the prerequi Auxiliary Commands: site for the calibration is Command: Load Parameter satisfied before issuing Defaults a calibration command. For instance, the RTD Parameter #: calibration command Restore all menu Description: must only be used parameters to their when the input sensor default values. - Page 27 For Technical Assistance in the U.S., Call Toll Free: 800.782.6776 CORPORATE HEADQUARTERS Athena Controls, Inc. 5145 Campus Drive Plymouth Meeting, PA 19462 U.S.A. Tel: 610.828.2490 Fax: 610.828.7084 Toll-Free in U.S.: 800.782.6776 Internet: www.athenacontrols.com 900M211U00 RevA...