ASIC/1 Controller Addressing

Device Addresses

Each controller has a 2 byte address kept in non-volatile memory that allows it to be

directly addressed with commands on the communications line. When the controller

recognizes its address, it processes the message and deliver the appropriate response

message.

Group Addresses

Device addresses that are evenly divisible by 256 are reserved for Group addressing.

Each controller can be assigned a separate single byte group address, 1..255. Group

addressing is used to send a one way communication to a specific group of devices in the

system. . No response is made by any devices listening to a message sent to a group

address.

Care must be taken in sending commands to a group destination address. Only controllers

of a single type should be assigned to the same group, because each type has different

parameter assignments. For example, ASIC/1-8055 VAV controllers may have different

setpoint assignments than ASIC/1-8655 Roof Top Controllers.

Global Addresses

All messages to ASI controllers may be transmitted using a Global Address. The Global

address is fixed in each ASI controllers. Addresses 23,041 through 23,295 (0x5A01

through 0x5AFF) are reserved for device global addresses. All messages sent to the

global address associated with a particular device will be received and acted on. No

response is made by any listening devices to a 'Global' message.

Use of global address should be restricted to time synchronization (message type 38h),

Set operating state (message type 10h), Set Emergency State (message type 12h). Other

messages should be used only if all controllers on the system are the same type.

Global broadcast messages are always broadcast 3 times with a gap of approximately 50

ms between each repeated message.

The Device Global Address allows for global downloads of parameters and setpoints to

all controllers of a particular type, without affecting other controllers which may use the

same parameter location for a different purpose.

The following Global Addresses are defined for the ASIC/1-8055 controllers.

Address 23,061 (0x5A65) ASIC/1-8655 Roof Top Controller (655A..)
Address 23,125 (0x5A55) All ASIC/1-8x55 Controllers (155A,175A, 255A, 355A,655A,600A)
Address 23,130 (0x5A5A) All ASIC/1 terminal unit controllers.

	ASIC/1 Controller Addressing
	Device Addresses Each controller has a 2 byte address kept in non-volatile memory that allows it to be directly addressed with commands on the communications line. When the controller recognizes its address, it processes the message and deliver the appropriate response message. Group Addresses Device addresses that are evenly divisible by 256 are reserved for Group addressing. Each controller can be assigned a separate single byte group address, 1..255. Group addressing is used to send a one way communication to a specific group of devices in the system. . No response is made by any devices listening to a message sent to a group address. Care must be taken in sending commands to a group destination address. Only controllers of a single type should be assigned to the same group, because each type has different parameter assignments. For example, ASIC/1-8055 VAV controllers may have different setpoint assignments than ASIC/1-8655 Roof Top Controllers. Global Addresses All messages to ASI controllers may be transmitted using a Global Address. The Global address is fixed in each ASI controllers. Addresses 23,041 through 23,295 (0x5A01 through 0x5AFF) are reserved for device global addresses. All messages sent to the global address associated with a particular device will be received and acted on. No response is made by any listening devices to a 'Global' message. Use of global address should be restricted to time synchronization (message type 38h), Set operating state (message type 10h), Set Emergency State (message type 12h). Other messages should be used only if all controllers on the system are the same type. Global broadcast messages are always broadcast 3 times with a gap of approximately 50 ms between each repeated message. The Device Global Address allows for global downloads of parameters and setpoints to all controllers of a particular type, without affecting other controllers which may use the same parameter location for a different purpose. The following Global Addresses are defined for the ASIC/1-8055 controllers. Address 23,061 (0x5A65) ASIC/1-8655 Roof Top Controller (655A..) Address 23,125 (0x5A55) All ASIC/1-8x55 Controllers (155A,175A, 255A, 355A,655A,600A) Address 23,130 (0x5A5A) All ASIC/1 terminal unit controllers.